According to the Apple Inc. 2017 Annual Report, answer the following questions:

1. The company 2017 net income is higher than the net income in 2016, Why did net income increase?
2. What effective income tax rate is the company experiencing?
3. How are customer coupons, discounts, and rebates treated in the financial statements?
4. Is their business seasonal?
5. How does their supply chain strategy impact the financial statements?
6. The company's profit margin ratio is 39.08% in 2016, 38.47% in 2017. Comment on the change.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K (Mark One) ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended September 30, 2017 or TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 001-36743 Apple Inc. (Exact name of Registrant as specified in its charter) California 94-2404110 (State or other jurisdiction of incorporation or organization) (I.R.S. Employer Identification No.) 1 Infinite Loop Cupertino, California 95014 (Address of principal executive offices) (Zip Code) (408) 996-1010 (Registrant's telephone number, including area code) Securities registered pursuant to Section 12(b) of the Act: Common Stock, $0.00001 par value per share 1.000% Notes due 2022 1.375% Notes due 2024 0.875% Notes due 2025 1.625% Notes due 2026 2.000% Notes due 2027 1.375% Notes due 2029 3.050% Notes due 2029 3.600% Notes due 2042 The Nasdaq Stock Market LLC New York Stock Exchange LLC New York Stock Exchange LLC New York Stock Exchange LLC New York Stock Exchange LLC New York Stock Exchange LLC New York Stock Exchange LLC New York Stock Exchange LLC New York Stock Exchange LLC (Title of each class) (Name of each exchange on which registered) Securities registered pursuant to Section 12(g) of the Act: None Indicate by check mark if the Registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act. Yes No Indicate by check mark if the Registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act. Yes No Indicate by check mark whether the Registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the Registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes No Indicate by check mark whether the Registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (232.405 of this chapter) during the preceding 12 months (or for such shorter period that the Registrant was required to submit and post such files). Yes No Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K (229.405 of this chapter) is not contained herein, and will not be contained, to the best of the Registrant's knowledge, in definitive proxy or information statements incorporated by reference in Part III of this Form 10-K or any amendment to this Form 10-K. Indicate by check mark whether the Registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, smaller reporting company, or an emerging growth company. See the definitions of \"large accelerated filer,\" \"accelerated filer,\" \"smaller reporting company,\" and \"emerging growth company\" in Rule 12b-2 of the Exchange Act. Large accelerated filer Non-accelerated filer Accelerated filer (Do not check if a smaller reporting company) Smaller reporting company Emerging growth company If an emerging growth company, indicate by check mark if the Registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. Indicate by check mark whether the Registrant is a shell company (as defined in Rule 12b-2 of the Act). Yes No The aggregate market value of the voting and non-voting stock held by non-affiliates of the Registrant, as of March 31, 2017, the last business day of the Registrant's most recently completed second fiscal quarter, was approximately $747,509,000,000. Solely for purposes of this disclosure, shares of common stock held by executive officers and directors of the Registrant as of such date have been excluded because such persons may be deemed to be affiliates. This determination of executive officers and directors as affiliates is not necessarily a conclusive determination for any other purposes. 5,134,312,000 shares of common stock were issued and outstanding as of October 20, 2017. DOCUMENTS INCORPORATED BY REFERENCE Portions of the Registrant's definitive proxy statement relating to its 2018 annual meeting of shareholders (the \"2018 Proxy Statement\") are incorporated by reference into Part III of this Annual Report on Form 10-K where indicated. The 2018 Proxy Statement will be filed with the U.S. Securities and Exchange Commission within 120 days after the end of the fiscal year to which this report relates. Apple Inc. Form 10-K For the Fiscal Year Ended September 30, 2017 TABLE OF CONTENTS Page Part I Item 1. Business 1 Item 1A. Risk Factors 8 Item 1B. Unresolved Staff Comments 16 Item 2. Properties 17 Item 3. Legal Proceedings 17 Item 4. Mine Safety Disclosures 17 Item 5. Item 6. Market for Registrant's Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Securities Selected Financial Data 21 Item 7. Management's Discussion and Analysis of Financial Condition and Results of Operations 22 Item 7A. Quantitative and Qualitative Disclosures About Market Risk 36 Item 8. Financial Statements and Supplementary Data 38 Item 9. Changes in and Disagreements with Accountants on Accounting and Financial Disclosure 72 Item 9A. Controls and Procedures 72 Item 9B. Other Information Part II 18 72 Part III Item 10. Directors, Executive Officers and Corporate Governance 73 Item 11. Executive Compensation 73 Item 12. Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters 73 Item 13. Certain Relationships and Related Transactions, and Director Independence 73 Item 14. Principal Accounting Fees and Services 73 Part IV Item 15. Exhibits, Financial Statement Schedules 74 Item 16. Form 10-K Summary 76 This Annual Report on Form 10-K (\"Form 10-K\") contains forward-looking statements, within the meaning of the Private Securities Litigation Reform Act of 1995, that involve risks and uncertainties. Many of the forward-looking statements are located in Part II, Item 7 of this Form 10-K under the heading \"Management's Discussion and Analysis of Financial Condition and Results of Operations.\" Forward-looking statements provide current expectations of future events based on certain assumptions and include any statement that does not directly relate to any historical or current fact. Forward-looking statements can also be identified by words such as \"future,\" \"anticipates,\" \"believes,\" \"estimates,\" \"expects,\" \"intends,\" \"plans,\" \"predicts,\" \"will,\" \"would,\" \"could,\" \"can,\" \"may,\" and similar terms. Forward-looking statements are not guarantees of future performance and the Company's actual results may differ significantly from the results discussed in the forward-looking statements. Factors that might cause such differences include, but are not limited to, those discussed in Part I, Item 1A of this Form 10-K under the heading \"Risk Factors,\" which are incorporated herein by reference. All information presented herein is based on the Company's fiscal calendar. Unless otherwise stated, references to particular years, quarters, months or periods refer to the Company's fiscal years ended in September and the associated quarters, months and periods of those fiscal years. Each of the terms the \"Company\" and \"Apple\" as used herein refers collectively to Apple Inc. and its wholly-owned subsidiaries, unless otherwise stated.The Company assumes no obligation to revise or update any forward-looking statements for any reason, except as required by law. PART I Item 1. Business Company Background The Company designs, manufactures and markets mobile communication and media devices and personal computers, and sells a variety of related software, services, accessories, networking solutions and third-party digital content and applications. The Company's products and services include iPhone, iPad, Mac, Apple Watch, Apple TV, a portfolio of consumer and professional software applications, iOS, macOS, watchOS and tvOS operating systems, iCloud, Apple Pay and a variety of accessory, service and support offerings. The Company sells and delivers digital content and applications through the iTunes Store, App Store, Mac App Store, TV App Store, iBooks Store and Apple Music (collectively \"Digital Content and Services\"). The Company sells its products worldwide through its retail stores, online stores and direct sales force, as well as through third-party cellular network carriers, wholesalers, retailers and value-added resellers. In addition, the Company sells a variety of third-party Apple-compatible products, including application software and various accessories through its retail and online stores. The Company sells to consumers, small and mid-sized businesses and education, enterprise and government customers. The Company's fiscal year is the 52 or 53week period that ends on the last Saturday of September. The Company is a California corporation established in 1977. Business Strategy The Company is committed to bringing the best user experience to its customers through its innovative hardware, software and services. The Company's business strategy leverages its unique ability to design and develop its own operating systems, hardware, application software and services to provide its customers products and solutions with innovative design, superior ease-of-use and seamless integration. As part of its strategy, the Company continues to expand its platform for the discovery and delivery of digital content and applications through its Digital Content and Services, which allows customers to discover and download digital content, iOS, Mac, Apple Watch and Apple TV applications, and books through either a Mac or Windows personal computer or through iPhone, iPad and iPod touch devices (\"iOS devices\"), Apple TV and Apple Watch. The Company also supports a community for the development of third-party software and hardware products and digital content that complement the Company's offerings. The Company believes a high-quality buying experience with knowledgeable salespersons who can convey the value of the Company's products and services greatly enhances its ability to attract and retain customers. Therefore, the Company's strategy also includes building and expanding its own retail and online stores and its third-party distribution network to effectively reach more customers and provide them with a high-quality sales and post-sales support experience. The Company believes ongoing investment in research and development (\"R&D\"), marketing and advertising is critical to the development and sale of innovative products, services and technologies. Business Organization The Company manages its business primarily on a geographic basis. The Company's reportable segments consist of the Americas, Europe, Greater China, Japan and Rest of Asia Pacific. Americas includes both North and South America. Europe includes European countries, as well as India, the Middle East and Africa. Greater China includes China, Hong Kong and Taiwan. Rest of Asia Pacific includes Australia and those Asian countries not included in the Company's other reportable segments. Although the reportable segments provide similar hardware and software products and similar services, each one is managed separately to better align with the location of the Company's customers and distribution partners and the unique market dynamics of each geographic region. Further information regarding the Company's reportable segments may be found in Part II, Item 7 of this Form 10-K under the subheading \"Segment Operating Performance,\" and in Part II, Item 8 of this Form 10-K in the Notes to Consolidated Financial Statements in Note 11, \"Segment Information and Geographic Data.\" Apple Inc. | 2017 Form 10-K | 1 Products iPhone iPhone is the Company's line of smartphones based on its iOS operating system. iPhone includes Siri, a voice-activated intelligent assistant, and Apple Pay and Touch ID on qualifying devices. In September 2017, the Company introduced iPhone 8 and 8 Plus, featuring a new glass and aluminum design, enhanced cameras and speakers, wireless charging and augmented reality optimization. Additionally, in September 2017, the Company announced iPhone X, featuring an all-glass design with a Super Retina OLED display and facial recognition. iPhone 8 and 8 Plus were available starting in September 2017, and iPhone X is expected to be available in November 2017. The Company's line of smartphones also includes iPhone 7, 7 Plus, 6s, 6s Plus and SE models. iPhone works with the iTunes Store, App Store, iBooks Store and Apple Music for purchasing, organizing and playing digital content and apps. iPad iPad is the Company's line of multi-purpose tablets based on its iOS operating system, which includes iPad Pro, iPad and iPad mini. iPad includes Siri, Apple Pay and Touch ID. In June 2017, the Company released a new 10.5-inch iPad Pro and an updated 12.9-inch iPad Pro with more advanced displays and enhanced performance. iPad works with the iTunes Store, App Store, iBooks Store and Apple Music for purchasing, organizing and playing digital content and apps. Mac Mac is the Company's line of desktop and portable personal computers based on its macOS operating system. Mac includes Siri and Apple Pay and also includes Touch ID on qualifying devices. The Company's desktop computers include iMac, 21.5\" iMac with Retina 4K display, 27\" iMac with Retina 5K display, Mac Pro and Mac mini. In June 2017, the Company announced the new iMac Pro, which is expected to be available in December 2017. The Company's portable computers include MacBook, MacBook Air, MacBook Pro and MacBook Pro with Touch Bar. Operating Systems iOS iOS is the Company's mobile operating system that serves as the foundation for iOS devices. Devices running iOS are compatible with both Mac and Windows personal computers and Apple's iCloud services. In September 2017, the Company released iOS 11, which includes new iPad features, new capabilities to improve images in Photos and Camera, enhanced Siri functionality and a redesigned App Store. iOS 11 also introduces ARKit, an augmented reality framework for developers. macOS macOS is the Company's desktop operating system and is built on an open-source UNIX-based foundation and provides an intuitive and integrated computer experience. Support for iCloud is built into macOS so users can access content and information from Mac, iOS devices and other supported devices and access downloaded content and apps from the iTunes Store. macOS High Sierra, released in September 2017, is the 14th major release of macOS and incorporates new storage, video and graphics technologies, and includes improvements to Photos, Safari and Mail. watchOS watchOS is the Company's operating system for Apple Watch. In September 2017, the Company released watchOS 4, which adds a proactive Siri watch face that displays the information users need most throughout the day, personalized activity coaching and a new music experience. watchOS 4 also includes an enhanced Workout app and introduces GymKit, a technology platform that offers users connected workouts with cardio equipment. tvOS tvOS is the Company's operating system for Apple TV. The tvOS operating system is based on the Company's iOS platform and enables developers to create new apps and games specifically for Apple TV and deliver them to customers through the Apple TV App Store. tvOS incorporates Siri capabilities that allow searching across apps and services. Apple Inc. | 2017 Form 10-K | 2 Application Software The Company's application software includes iWork and various other software, including Final Cut Pro, Logic Pro X and FileMaker Pro. iWork is the Company's integrated productivity suite included with all Mac computers and is designed to help users create, present and publish documents through Pages, presentations through Keynote and spreadsheets through Numbers. The Company also has Multi-Touch versions of iWork applications designed specifically for use on iOS devices, which are available as free downloads for all new iOS devices. Services Digital Content and Services The iTunes Store, available for iOS devices, Mac and Windows personal computers and Apple TV, allows customers to purchase and download music and TV shows, rent or purchase movies and download free podcasts. The App Store, available for iOS devices, allows customers to discover and download apps and purchase in-app content. The Mac App Store, available for Mac computers, allows customers to discover, download and install Mac applications. The TV App Store allows customers access to apps and games specifically for Apple TV. The iBooks Store, available for iOS devices and Mac computers, features e-books from major and independent publishers. Apple Music offers users a curated listening experience with on-demand radio stations that evolve based on a user's play or download activity and a subscription-based internet streaming service that also provides unlimited access to the Apple Music library. iCloud iCloud is the Company's cloud service which stores music, photos, contacts, calendars, mail, documents and more, keeping them up-to-date and available across multiple iOS devices, Mac and Windows personal computers and Apple TV. iCloud services include iCloud Drive, iCloud Photo Library, Family Sharing, Find My iPhone, iPad or Mac, Find My Friends, Notes, iCloud Keychain and iCloud Backup for iOS devices. AppleCare The Company offers a range of support options for its customers. These include assistance that is built into software products, electronic product manuals, online support including comprehensive product information as well as technical assistance, the AppleCare Protection Plan (\"APP\") and AppleCare+ (\"AC+\"). APP and AC+ are fee-based services that extend the coverage of phone support eligibility and hardware warranty repairs. APP and AC+ offer additional coverage under some circumstances for instances of accidental damage and are available in certain countries for certain products. Apple Pay Apple Pay is the Company's cashless payment service available in certain countries that offers an easy, secure and private way to pay. Apple Pay allows users to pay for purchases in participating stores accepting contactless payments and to pay for purchases within participating apps on qualifying devices. Apple Pay accepts credit and debit cards across major card networks and also supports reward programs and store-issued credit and debit cards. The Company expects to release an update to iOS 11 and watchOS 4 in fall 2017 that will allow peer-to-peer payments using Apple Pay. Other Products Accessories The Company sells a variety of Apple-branded and third-party accessories, including Beats products, headphones, displays, storage devices, and various other connectivity and computing products and supplies. In December 2016, the Company released AirPods, new wireless headphones that interact with Siri. Additionally, in June 2017, the Company announced the HomePod wireless speaker and in September 2017, announced AirPower, a new wireless charging accessory, which are expected to be available in December 2017 and calendar year 2018, respectively. Apple TV Apple TV connects to consumers' TVs and enables them to access digital content directly for streaming video, playing music and games, and viewing photos. Content from Apple Music and other media services is also available on Apple TV. Apple TV allows streaming digital content from Mac and Windows personal computers through Home Share and from compatible Mac and iOS devices through AirPlay. Apple TV runs on the Company's tvOS operating system and is based on apps built for the television. Additionally, the Apple TV remote features Siri, allowing users to search and access content with their voice. In September 2017, the Company introduced Apple TV 4K, which supports 4K and High Dynamic Range content, providing customers with enhanced picture quality. Apple Inc. | 2017 Form 10-K | 3 Apple Watch Apple Watch is a personal electronic device that combines the watchOS user interface and technologies created specifically for a smaller device, including the Digital Crown, a unique navigation tool that allows users to seamlessly scroll, zoom and navigate, and Force Touch, a technology that senses the difference between a tap and a press and allows users to access controls within apps. Apple Watch enables users to communicate in new ways from their wrist, track their health and fitness through activity and workout apps, and includes Siri and Apple Pay. In September 2017, the Company introduced Apple Watch Series 3, featuring health and fitness enhancements and built-in cellular capability on qualifying devices. iPod touch iPod touch, based on the Company's iOS operating system, is a flash memory-based digital music and media player that works with the iTunes Store, App Store, iBooks Store and Apple Music for purchasing and playing digital content and apps. Developer Programs The Company's developer programs support app developers with building, testing and distributing apps for iOS, macOS, watchOS and tvOS. Developer program membership provides access to beta software and advanced app capabilities (e.g., CloudKit, HealthKit and Apple Pay), the ability to test apps using TestFlight, distribution on the App Store, access to App Analytics and code-level technical support. Developer programs also exist for businesses creating apps for internal use (the Apple Developer Enterprise Program) and developers creating accessories for Apple devices (the MFi Program). All developers, even those who are not developer program members, can sign in with their Apple ID to post on the Apple Developer Forums and use Xcode, the Company's integrated development environment for creating apps for Apple platforms. Xcode includes project management tools; analysis tools to collect, display and compare app performance data; simulation tools to locally run, test and debug apps; and tools to simplify the design and development of user interfaces. All developers also have access to extensive technical documentation and sample code. Markets and Distribution The Company's customers are primarily in the consumer, small and mid-sized business, education, enterprise and government markets. The Company sells its products and resells third-party products in most of its major markets directly to consumers and small and mid-sized businesses through its retail and online stores and its direct sales force. The Company also employs a variety of indirect distribution channels, such as third-party cellular network carriers, wholesalers, retailers and value-added resellers. During 2017, the Company's net sales through its direct and indirect distribution channels accounted for 28% and 72%, respectively, of total net sales. The Company believes that sales of its innovative and differentiated products and services are enhanced by knowledgeable salespersons who can convey the value of the hardware and software integration and demonstrate the unique solutions that are available on its products. The Company further believes providing direct contact with its targeted customers is an effective way to demonstrate the advantages of its products over those of its competitors and providing a high-quality sales and after-sales support experience is critical to attracting new and retaining existing customers. To ensure a high-quality buying experience for its products in which service and education are emphasized, the Company continues to build and improve its distribution capabilities by expanding the number of its own retail stores worldwide. The Company's retail stores are typically located at high-traffic locations in quality shopping malls and urban shopping districts. By operating its own stores and locating them in desirable high-traffic locations the Company is better positioned to ensure a high-quality customer buying experience and attract new customers. The stores are designed to simplify and enhance the presentation and marketing of the Company's products and related solutions. The retail stores employ experienced and knowledgeable personnel who provide product advice, service and training, and offer a wide selection of third-party hardware, software and other accessories that complement the Company's products. The Company has also invested in programs to enhance reseller sales by placing high-quality Apple fixtures, merchandising materials and other resources within selected third-party reseller locations. Through the Apple Premium Reseller Program, certain third-party resellers focus on the Apple platform by providing a high level of product expertise, integration and support services. The Company is committed to delivering solutions to help educators teach and students learn. The Company believes effective integration of technology into classroom instruction can result in higher levels of student achievement and has designed a range of products, services and programs to address the needs of education customers. The Company also supports mobile learning and real-time distribution of, and access to, education-related materials through iTunes U, a platform that allows students and teachers to share and distribute educational media online. The Company sells its products to the education market through its direct sales force, select third-party resellers and its retail and online stores. Apple Inc. | 2017 Form 10-K | 4 The Company also sells its hardware and software products to enterprise and government customers in each of its reportable segments. The Company's products are deployed in these markets because of their performance, productivity, ease-of-use and seamless integration into information technology environments. The Company's products are compatible with thousands of thirdparty business applications and services, and its tools enable the development and secure deployment of custom applications as well as remote device administration. No single customer accounted for more than 10% of net sales in 2017, 2016 and 2015. Competition The markets for the Company's products and services are highly competitive and the Company is confronted by aggressive competition in all areas of its business. These markets are characterized by frequent product introductions and rapid technological advances that have substantially increased the capabilities and use of mobile communication and media devices, personal computers and other digital electronic devices. Many of the Company's competitors that sell mobile devices and personal computers based on other operating systems seek to compete primarily through aggressive pricing and very low cost structures. The Company's financial condition and operating results can be adversely affected by these and other industry-wide downward pressures on gross margins. Principal competitive factors important to the Company include price, product features (including security features), relative price and performance, product quality and reliability, design innovation, a strong third-party software and accessories ecosystem, marketing and distribution capability, service and support and corporate reputation. The Company is focused on expanding its market opportunities related to personal computers and mobile communication and media devices. These markets are highly competitive and include many large, well-funded and experienced participants. The Company expects competition in these markets to intensify significantly as competitors attempt to imitate some of the features of the Company's products and applications within their own products or, alternatively, collaborate with each other to offer solutions that are more competitive than those they currently offer. These markets are characterized by aggressive price competition, frequent product introductions, evolving design approaches and technologies, rapid adoption of technological and product advancements by competitors and price sensitivity on the part of consumers and businesses. The Company's digital content services have faced significant competition from other companies promoting their own digital music and content products and services, including those offering free peer-to-peer music and video services. The Company's future financial condition and operating results depend on the Company's ability to continue to develop and offer new innovative products and services in each of the markets in which it competes. The Company believes it offers superior innovation and integration of the entire solution including the hardware (iOS devices, Mac, Apple Watch and Apple TV), software (iOS, macOS, watchOS and tvOS), online services and distribution of digital content and applications (Digital Content and Services). Some of the Company's current and potential competitors have substantial resources and may be able to provide such products and services at little or no profit or even at a loss to compete with the Company's offerings. Supply of Components Although most components essential to the Company's business are generally available from multiple sources, a few components are currently obtained from single or limited sources. In addition, the Company competes for various components with other participants in the markets for mobile communication and media devices and personal computers. Therefore, many components used by the Company, including those that are available from multiple sources, are at times subject to industry-wide shortage and significant pricing fluctuations that could materially adversely affect the Company's financial condition and operating results. The Company uses some custom components that are not commonly used by its competitors, and new products introduced by the Company often utilize custom components available from only one source. When a component or product uses new technologies, initial capacity constraints may exist until the suppliers' yields have matured or manufacturing capacity has increased. If the Company's supply of components for a new or existing product were delayed or constrained, or if an outsourcing partner delayed shipments of completed products to the Company, the Company's financial condition and operating results could be materially adversely affected. The Company's business and financial performance could also be materially adversely affected depending on the time required to obtain sufficient quantities from the original source, or to identify and obtain sufficient quantities from an alternative source. Continued availability of these components at acceptable prices, or at all, may be affected if those suppliers decide to concentrate on the production of common components instead of components customized to meet the Company's requirements. The Company has entered into agreements for the supply of many components; however, there can be no guarantee that the Company will be able to extend or renew these agreements on similar terms, or at all. Therefore, the Company remains subject to significant risks of supply shortages and price increases that could materially adversely affect its financial condition and operating results. Apple Inc. | 2017 Form 10-K | 5 Substantially all of the Company's hardware products are currently manufactured by outsourcing partners that are located primarily in Asia, with some Mac computers manufactured in the U.S. and Ireland. A significant concentration of this manufacturing is currently performed by a small number of outsourcing partners, often in single locations. Certain of these outsourcing partners are the solesourced suppliers of components and manufacturers for many of the Company's products. Although the Company works closely with its outsourcing partners on manufacturing schedules, the Company's operating results could be adversely affected if its outsourcing partners were unable to meet their production commitments. The Company's manufacturing purchase obligations typically cover its requirements for periods up to 150 days. Research and Development Because the industries in which the Company competes are characterized by rapid technological advances, the Company's ability to compete successfully depends heavily upon its ability to ensure a continual and timely flow of competitive products, services and technologies to the marketplace. The Company continues to develop new technologies to enhance existing products and services, and to expand the range of its offerings through R&D, licensing of intellectual property and acquisition of third-party businesses and technology. Total R&D expense was $11.6 billion, $10.0 billion and $8.1 billion in 2017, 2016 and 2015, respectively. Intellectual Property The Company currently holds a broad collection of intellectual property rights relating to certain aspects of its hardware devices, accessories, software and services. This includes patents, copyrights, trademarks, service marks, trade dress and other forms of intellectual property rights in the U.S. and a number of foreign countries. Although the Company believes the ownership of such intellectual property rights is an important factor in its business and that its success does depend in part on such ownership, the Company relies primarily on the innovative skills, technical competence and marketing abilities of its personnel. The Company regularly files patent applications to protect innovations arising from its research, development and design, and is currently pursuing thousands of patent applications around the world. Over time, the Company has accumulated a large portfolio of issued patents, including utility patents, design patents and others. The Company also holds copyrights relating to certain aspects of its products and services. No single intellectual property right is solely responsible for protecting the Company's products. The Company believes the duration of its intellectual property rights is adequate relative to the expected lives of its products. Many of the Company's products are designed to include intellectual property obtained from third parties. It may be necessary in the future to seek or renew licenses relating to various aspects of its products, processes and services. While the Company has generally been able to obtain such licenses on commercially reasonable terms in the past, there is no guarantee that such licenses could be obtained in the future on reasonable terms or at all. Because of technological changes in the industries in which the Company competes, current extensive patent coverage and the rapid rate of issuance of new patents, it is possible that certain components of the Company's products, processes and services may unknowingly infringe existing patents or intellectual property rights of others. From time to time, the Company has been notified that it may be infringing certain patents or other intellectual property rights of third parties. Foreign and Domestic Operations and Geographic Data During 2017, the Company's domestic and international net sales accounted for 37% and 63%, respectively, of total net sales. Information regarding financial data by geographic segment is set forth in Part II, Item 7 of this Form 10-K under the subheading \"Segment Operating Performance,\" and in Part II, Item 8 of this Form 10-K in the Notes to Consolidated Financial Statements in Note 11, \"Segment Information and Geographic Data.\" Substantially all of the Company's hardware products are currently manufactured by outsourcing partners that are located primarily in Asia, with some Mac computers manufactured in the U.S. and Ireland. The supply and manufacture of a number of components is performed by sole-sourced outsourcing partners in the U.S., Asia and Europe. Margins on sales of the Company's products in foreign countries and on sales of products that include components obtained from foreign suppliers, can be adversely affected by foreign currency exchange rate fluctuations and by international trade regulations, including tariffs and antidumping penalties. Information regarding concentration in the available sources of supply of materials and products is set forth in Part II, Item 8 of this Form 10-K in the Notes to Consolidated Financial Statements in Note 10, \"Commitments and Contingencies.\" Business Seasonality and Product Introductions The Company has historically experienced higher net sales in its first quarter compared to other quarters in its fiscal year due in part to seasonal holiday demand. Additionally, new product introductions can significantly impact net sales, product costs and operating expenses. Product introductions can also impact the Company's net sales to its indirect distribution channels as these channels are filled with new product inventory following a product introduction, and often, channel inventory of a particular product declines as the next related major product launch approaches. Net sales can also be affected when consumers and distributors anticipate a product introduction. However, neither historical seasonal patterns nor historical patterns of product introductions should be considered reliable indicators of the Company's future pattern of product introductions, future net sales or financial performance. Apple Inc. | 2017 Form 10-K | 6 Warranty The Company offers a limited parts and labor warranty on its hardware products. The basic warranty period is typically one year from the date of purchase by the original end-user. The Company also offers a 90-day limited warranty on the service parts used to repair the Company's hardware products. In certain jurisdictions, local law requires that manufacturers guarantee their products for a period prescribed by statute, typically at least two years. In addition, where available, consumers may purchase APP or AC+, which extends service coverage on many of the Company's hardware products. Backlog In the Company's experience, the actual amount of product backlog at any particular time is not a meaningful indication of its future business prospects. In particular, backlog often increases immediately following new product introductions as customers anticipate shortages. Backlog is often reduced once customers believe they can obtain sufficient supply. Because of the foregoing, backlog should not be considered a reliable indicator of the Company's ability to achieve any particular level of revenue or financial performance. Employees As of September 30, 2017, the Company had approximately 123,000 full-time equivalent employees. Available Information The Company's Annual Report on Form 10-K, Quarterly Reports on Form 10-Q, Current Reports on Form 8-K, and amendments to reports filed pursuant to Sections 13(a) and 15(d) of the Securities Exchange Act of 1934, as amended (the \"Exchange Act\"), are filed with the Securities and Exchange Commission (the \"SEC\"). The Company is subject to the informational requirements of the Exchange Act and files or furnishes reports, proxy statements and other information with the SEC. Such reports and other information filed by the Company with the SEC are available free of charge on the Company's website at investor.apple.com/sec.cfm when such reports are available on the SEC's website. The public may read and copy any materials filed by the Company with the SEC at the SEC's Public Reference Room at 100 F Street, NE, Room 1580, Washington, DC 20549. The public may obtain information on the operation of the Public Reference Room by calling the SEC at 1-800-SEC-0330. The SEC maintains an internet site that contains reports, proxy and information statements and other information regarding issuers that file electronically with the SEC at www.sec.gov. The information contained on the websites referenced in this Form 10-K is not incorporated by reference into this filing. Further, the Company's references to website URLs are intended to be inactive textual references only. Apple Inc. | 2017 Form 10-K | 7 Item 1A. Risk Factors The following discussion of risk factors contains forward-looking statements. These risk factors may be important to understanding other statements in this Form 10-K. The following information should be read in conjunction with Part II, Item 7, \"Management's Discussion and Analysis of Financial Condition and Results of Operations\" and the consolidated financial statements and related notes in Part II, Item 8, \"Financial Statements and Supplementary Data\" of this Form 10-K. The business, financial condition and operating results of the Company can be affected by a number of factors, whether currently known or unknown, including but not limited to those described below, any one or more of which could, directly or indirectly, cause the Company's actual financial condition and operating results to vary materially from past, or from anticipated future, financial condition and operating results. Any of these factors, in whole or in part, could materially and adversely affect the Company's business, financial condition, operating results and stock price. Because of the following factors, as well as other factors affecting the Company's financial condition and operating results, past financial performance should not be considered to be a reliable indicator of future performance, and investors should not use historical trends to anticipate results or trends in future periods. Global and regional economic conditions could materially adversely affect the Company. The Company's operations and performance depend significantly on global and regional economic conditions. Uncertainty about global and regional economic conditions poses a risk as consumers and businesses may postpone spending in response to tighter credit, higher unemployment, financial market volatility, government austerity programs, negative financial news, declines in income or asset values and/or other factors. These worldwide and regional economic conditions could have a material adverse effect on demand for the Company's products and services. Demand also could differ materially from the Company's expectations as a result of currency fluctuations because the Company generally raises prices on goods and services sold outside the U.S. to correspond with the effect of a strengthening of the U.S. dollar. Other factors that could influence worldwide or regional demand include changes in fuel and other energy costs, conditions in the real estate and mortgage markets, unemployment, labor and healthcare costs, access to credit, consumer confidence and other macroeconomic factors affecting consumer spending behavior. These and other economic factors could materially adversely affect demand for the Company's products and services. In the event of financial turmoil affecting the banking system and financial markets, additional consolidation of the financial services industry, or significant financial service institution failures, there could be tightening in the credit markets, low liquidity and extreme volatility in fixed income, credit, currency and equity markets. This could have a number of effects on the Company's business, including the insolvency or financial instability of outsourcing partners or suppliers or their inability to obtain credit to finance development and/or manufacture products, resulting in product delays; inability of customers, including channel partners, to obtain credit to finance purchases of the Company's products; failure of derivative counterparties and other financial institutions; and restrictions on the Company's ability to issue new debt. Other income and expense also could vary materially from expectations depending on gains or losses realized on the sale or exchange of financial instruments; impairment charges resulting from revaluations of debt and equity securities and other investments; changes in interest rates; increases or decreases in cash balances; volatility in foreign exchange rates; and changes in fair value of derivative instruments. Increased volatility in the financial markets and overall economic uncertainty would increase the risk of the actual amounts realized in the future on the Company's financial instruments differing significantly from the fair values currently assigned to them. Global markets for the Company's products and services are highly competitive and subject to rapid technological change, and the Company may be unable to compete effectively in these markets. The Company's products and services compete in highly competitive global markets characterized by aggressive price competition and resulting downward pressure on gross margins, frequent introduction of new products, short product life cycles, evolving industry standards, continual improvement in product price/performance characteristics, rapid adoption of technological and product advancements by competitors and price sensitivity on the part of consumers. The Company's ability to compete successfully depends heavily on its ability to ensure a continuing and timely introduction of innovative new products, services and technologies to the marketplace. The Company believes it is unique in that it designs and develops nearly the entire solution for its products, including the hardware, operating system, numerous software applications and related services. As a result, the Company must make significant investments in R&D. The Company currently holds a significant number of patents and copyrights and has registered and/or has applied to register numerous patents, trademarks and service marks. In contrast, many of the Company's competitors seek to compete primarily through aggressive pricing and very low cost structures, and emulating the Company's products and infringing on its intellectual property. If the Company is unable to continue to develop and sell innovative new products with attractive margins or if competitors infringe on the Company's intellectual property, the Company's ability to maintain a competitive advantage could be adversely affected. Apple Inc. | 2017 Form 10-K | 8 The Company markets certain mobile communication and media devices based on the iOS mobile operating system and also markets related services, including third-party digital content and applications. The Company faces substantial competition in these markets from companies that have significant technical, marketing, distribution and other resources, as well as established hardware, software and digital content supplier relationships; and the Company has a minority market share in the global smartphone market. Additionally, the Company faces significant competition as competitors reduce their selling prices and attempt to imitate the Company's product features and applications within their own products or, alternatively, collaborate with each other to offer solutions that are more competitive than those they currently offer. The Company competes with business models that provide content to users for free. The Company also competes with illegitimate means to obtain third-party digital content and applications. Some of the Company's competitors have greater experience, product breadth and distribution channels than the Company. Because some current and potential competitors have substantial resources and/or experience and a lower cost structure, they may be able to provide products and services at little or no profit or even at a loss. The Company also expects competition to intensify as competitors attempt to imitate the Company's approach to providing components seamlessly within their individual offerings or work collaboratively to offer integrated solutions. The Company's financial condition and operating results depend substantially on the Company's ability to continually improve iOS and iOS devices in order to maintain their functional and design advantages. The Company is the only authorized maker of hardware using macOS, which has a minority market share in the personal computer market. This market has been contracting and is dominated by computer makers using competing operating systems, most notably Windows. In the market for personal computers and accessories, the Company faces a significant number of competitors, many of which have broader product lines, lower-priced products and a larger installed customer base. Historically, consolidation in this market has resulted in larger competitors. Competition has been particularly intense as competitors have aggressively cut prices and lowered product margins. An increasing number of internet-enabled devices that include software applications and are smaller and simpler than traditional personal computers compete for market share with the Company's existing products. The Company's financial condition and operating results also depend on its ability to continually improve the Mac platform to maintain its functional and design advantages. There can be no assurance the Company will be able to continue to provide products and services that compete effectively. To remain competitive and stimulate customer demand, the Company must successfully manage frequent product introductions and transitions. Due to the highly volatile and competitive nature of the industries in which the Company competes, the Company must continually introduce new products, services and technologies, enhance existing products and services, effectively stimulate customer demand for new and upgraded products and successfully manage the transition to these new and upgraded products. The success of new product introductions depends on a number of factors including, but not limited to, timely and successful product development, market acceptance, the Company's ability to manage the risks associated with new product production ramp-up issues, the availability of application software for new products, the effective management of purchase commitments and inventory levels in line with anticipated product demand, the availability of products in appropriate quantities and at expected costs to meet anticipated demand and the risk that new products may have quality or other defects or deficiencies in the early stages of introduction. Accordingly, the Company cannot determine in advance the ultimate effect of new product introductions and transitions. The Company depends on the performance of distributors, carriers and other resellers. The Company distributes its products through cellular network carriers, wholesalers, national and regional retailers and value-added resellers, many of whom distribute products from competing manufacturers. The Company also sells its products and third-party products in most of its major markets directly to education, enterprise and government customers and consumers and small and mid-sized businesses through its retail and online stores. Some carriers providing cellular network service for iPhone subsidize users' purchases of the device. There is no assurance that such subsidies will be continued at all or in the same amounts upon renewal of the Company's agreements with these carriers or in agreements the Company enters into with new carriers. The Company has invested and will continue to invest in programs to enhance reseller sales, including staffing selected resellers' stores with Company employees and contractors, and improving product placement displays. These programs could require a substantial investment while providing no assurance of return or incremental revenue. The financial condition of these resellers could weaken, these resellers could stop distributing the Company's products, or uncertainty regarding demand for some or all of the Company's products could cause resellers to reduce their ordering and marketing of the Company's products. Apple Inc. | 2017 Form 10-K | 9 The Company faces substantial inventory and other asset risk in addition to purchase commitment cancellation risk. The Company records a write-down for product and component inventories that have become obsolete or exceed anticipated demand or net realizable value and accrues necessary cancellation fee reserves for orders of excess products and components. The Company also reviews its long-lived assets, including capital assets held at its suppliers' facilities and inventory prepayments, for impairment whenever events or circumstances indicate the carrying amount of an asset may not be recoverable. If the Company determines that impairment has occurred, it records a write-down equal to the amount by which the carrying value of the asset exceeds its fair value. Although the Company believes its provisions related to inventory, capital assets, inventory prepayments and other assets and purchase commitments are currently adequate, no assurance can be given that the Company will not incur additional related charges given the rapid and unpredictable pace of product obsolescence in the industries in which the Company competes. The Company must order components for its products and build inventory in advance of product announcements and shipments. Manufacturing purchase obligations typically cover forecasted component and manufacturing requirements for periods up to 150 days. Because the Company's markets are volatile, competitive and subject to rapid technology and price changes, there is a risk the Company will forecast incorrectly and order or produce excess or insufficient amounts of components or products, or not fully utilize firm purchase commitments. Future operating results depend upon the Company's ability to obtain components in sufficient quantities on commercially reasonable terms. Because the Company currently obtains components from single or limited sources, the Company is subject to significant supply and pricing risks. Many components, including those that are available from multiple sources, are at times subject to industry-wide shortages and significant commodity pricing fluctuations. While the Company has entered into agreements for the supply of many components, there can be no assurance that the Company will be able to extend or renew these agreements on similar terms, or at all. A number of suppliers of components may suffer from poor financial conditions, which can lead to business failure for the supplier or consolidation within a particular industry, further limiting the Company's ability to obtain sufficient quantities of components on commercially reasonable terms. The effects of global or regional economic conditions on the Company's suppliers, described in \"Global and regional economic conditions could materially adversely affect the Company\" above, also could affect the Company's ability to obtain components. Therefore, the Company remains subject to significant risks of supply shortages and price increases. The Company's new products often utilize custom components available from only one source. When a component or product uses new technologies, initial capacity constraints may exist until the suppliers' yields have matured or manufacturing capacity has increased. Continued availability of these components at acceptable prices, or at all, may be affected for any number of reasons, including if those suppliers decide to concentrate on the production of common components instead of components customized to meet the Company's requirements. The supply of components for a new or existing product could be delayed or constrained, or a key manufacturing vendor could delay shipments of completed products to the Company. The Company depends on component and product manufacturing and logistical services provided by outsourcing partners, many of which are located outside of the U.S. Substantially all of the Company's manufacturing is performed in whole or in part by a few outsourcing partners located primarily in Asia. The Company has also outsourced much of its transportation and logistics management. While these arrangements may lower operating costs, they also reduce the Company's direct control over production and distribution. It is uncertain what effect such diminished control will have on the quality or quantity of products or services, or the Company's flexibility to respond to changing conditions. Although arrangements with these partners may contain provisions for warranty expense reimbursement, the Company may remain responsible to the consumer for warranty service in the event of product defects and could experience an unanticipated product defect or warranty liability. While the Company relies on its partners to adhere to its supplier code of conduct, material violations of the supplier code of conduct could occur. The Company relies on sole-sourced outsourcing partners in the U.S., Asia and Europe to supply and manufacture many critical components, and on outsourcing partners primarily located in Asia, for final assembly of substantially all of the Company's hardware products. Any failure of these partners to perform may have a negative impact on the Company's cost or supply of components or finished goods. In addition, manufacturing or logistics in these locations or transit to final destinations may be disrupted for a variety of reasons including, but not limited to, natural and man-made disasters, information technology system failures, commercial disputes, military actions or economic, business, labor, environmental, public health, or political issues. The Company has invested in manufacturing process equipment, much of which is held at certain of its outsourcing partners, and has made prepayments to certain of its suppliers associated with long-term supply agreements. While these arrangements help ensure the supply of components and finished goods, if these outsourcing partners or suppliers experience severe financial problems or other disruptions in their business, such continued supply could be reduced or terminated and the net realizable value of these assets could be negatively impacted. Apple Inc. | 2017 Form 10-K | 10 The Company's products and services may experience quality problems from time to time that can result in decreased sales and operating margin and harm to the Company's reputation. The Company sells complex hardware and software products and services that can contain design and manufacturing defects. Sophisticated operating system software and applications, such as those sold by the Company, often contain \"bugs\" that can unexpectedly interfere with the software's intended operation. The Company's online services may from time to time experience outages, service slowdowns or errors. Defects may also occur in components and products the Company purchases from third parties. There can be no assurance the Company will be able to detect and fix all defects in the hardware, software and services it sells. Failure to do so could result in lost revenue, significant warranty and other expenses and harm to the Company's reputation. The Company relies on access to third-party digital content, which may not be available to the Company on commercially reasonable terms or at all. The Company contracts with numerous third parties to offer their digital content to customers. This includes the right to sell currently available music, movies, TV shows and books. The licensing or other distribution arrangements with these third parties are for relatively short terms and do not guarantee the continuation or renewal of these arrangements on reasonable terms, if at all. Some third-party content providers and distributors currently or in the future may offer competing products and services, and could take action to make it more difficult or impossible for the Company to license or otherwise distribute their content in the future. Other content owners, providers or distributors may seek to limit the Company's access to, or increase the cost of, such content. The Company may be unable to continue to offer a wide variety of content at reasonable prices with acceptable usage rules, or continue to expand its geographic reach. Failure to obtain the right to make third-party digital content available, or to make such content available on commercially reasonable terms, could have a material adverse impact on the Company's financial condition and operating results. Some third-party digital content providers require the Company to provide digital rights management and other security solutions. If requirements change, the Company may have to develop or license new technology to provide these solutions. There is no assurance the Company will be able to develop or license such solutions at a reasonable cost and in a timely manner. In addition, certain countries have passed or may propose and adopt legislation that would force the Company to license its digital rights management, which could lessen the protection of content and subject it to piracy and also could negatively affect arrangements with the Company's content providers. The Company's future performance depends in part on support from third-party software developers. The Company believes decisions by customers to purchase its hardware products depend in part on the availability of third-party software applications and services. There is no assurance that third-party developers will continue to develop and maintain software applications and services for the Company's products. If third-party software applications and services cease to be developed and maintained for the Company's products, customers may choose not to buy the Company's products. With respect to its Mac products, the Company believes the availability of third-party software applications and services depends in part on the developers' perception and analysis of the relative benefits of developing, maintaining and upgrading such software for the Company's products compared to Windows-based products. This analysis may be based on factors such as the market position of the Company and its products, the anticipated revenue that may be generated, expected future growth of Mac sales and the costs of developing such applications and services. If the Company's minority share of the global personal computer market causes developers to question the Mac's prospects, developers could be less inclined to develop or upgrade software for the Company's Mac products and more inclined to devote their resources to developing and upgrading software for the larger Windows market. With respect to iOS devices, the Company relies on the continued availability and development of compelling and innovative software applications, including applications distributed through the App Store. iOS devices are subject to rapid technological change, and, if third-party developers are unable to or choose not to keep up with this pace of change, third-party applications might not successfully operate and may result in dissatisfied customers. As with applications for the Company's Mac products, the availability and development of these applications also depend on developers' perceptions and analysis of the relative benefits of developing, maintaining or upgrading software for the Company's iOS devices rather than its competitors' platforms, such as Android. If developers focus their efforts on these competing platforms, the availability and quality of applications for the Company's iOS devices may suffer. Apple Inc. | 2017 Form 10-K | 11 The Company relies on access to third-party intellectual property, which may not be available to the Company on commercially reasonable terms or at all. Many of the Company's products include third-party intellectual property, which requires licenses from those third parties. Based on past experience and industry practice, the Company believes such licenses generally can be obtained on reasonable terms. There is, however, no assurance that the necessary licenses can be obtained on acceptable terms or at all. Failure to obtain the right to use third-party intellectual property, or to use such intellectual property on commercially reasonable terms, could preclude the Company from selling certain products or otherwise have a material adverse impact on the Company's financial condition and operating results. The Company could be impacted by unfavorable results of legal proceedings, such as being found to have infringed on intellectual property rights. The Company is subject to various legal proceedings and claims that have arisen in the ordinary