The question is about cloud computing.

Question: In the above two cases, which cloud computing service offering model will be better for creating a website?

I am confused about the difference between IaaS, PaaS and Saas.

What are the differences between Case A and B?

How these differences affect the choice of cloud computing service offering model?

For business case A, the company wants the capabilities to manage the voice mail, email and fax, and it would like to set up a large database that allows professionals to post their resumes in the database.

In my understanding, email and fax are services, which can be provided by SaaS.

However, can the customers manage a database when using SaaS?

Thanks.

Business case A: FirstCo FirstCo is a consulting company that provide advice service by offering easy access to needed information in specified fields of setting up a startup company. The company would like to move into a number of fields. Initially, FirstCo would like to begin by addressing the needs of people in the Human Resource Management (HRM), accounts and tax, as well as startup funding and grants. Also, the company plans to extend its business to reach the general public to provide a Web site with advice on various issues, such as tax laws and individual retirement account saving rules. For the area of HRM, the company would like to set up a large database that allows professionals to post their resumes in the database. Those customers, registered as employers in FirstCo, are allowed to search for candidates to fill up their company's vacancies. FirstCo would like to offer more detailed information services to their registered employers. In addition, FirstCo wants to provide the capabilities that might help the registered employers manage their voice mail, email and fax. Web reference: Small Business (https://smallbusiness.co.uk/) Business case B: MalayTour MalayTour is a small tour agency that specialized in planning a variety of tours, including half day to 10-day options in a variety of destinations, for its customers for Malaysia and Borneo. Also, it will take its customers to explore the educational and cultural experience in Malaysia and Borneo. They are famous for their wildlife, beauty and culture diversity. With a range of destinations to explore, the customers can enjoy a lot of water and land based activities on these islands where sun, sea and sand combine to create a tropical dreamland. In addition, the customer will find unspoiled jungle, powdery white beaches and sapphire blue waters with many secluded bays to escape to. MalayTour also offer expert advice in accommodation options in Malaysia and Borneo. There is a large selection of resorts, retreats and hotels available for tourists to choose to suit for their holiday trip. The owner wants to make better use of the Internet to reach its potential customers and would like to enable the Web site to allow customers to book their accommodations, sea sports, land sports and training classes on varieties of sea & land sports online. Web reference: Malaysia Holidays (http://www.malaysiaholidays.com.au)