What are the cash flow operations? for years 2021 and 2020
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third-party video game royalties, cloud services, and advertising Search advertising revenue, excluding TAC, growth Revenue from search advertising excluding traffic acquisition costs ("TAC") paid to Bing Ads network publishers SUMMARY RESULTS OF OPERATIONS 2021 2020 Percentage Change (In millions, except percentages and per share amounts) Revenue Gross margin Operating income Net income Diluted earnings per share Adjusted net income (non-GAAP) Adjusted diluted earnings per share (non-GAAP) 168,088 $ 115,856 69,916 61,271 8.05 60,651 7.97 143,015 96,937 52,959 44,281 5.76 44,281 5.76 18% 20% 32% 38% 40% 37% 38% Adjusted net income and adjusted diluted earnings per share ("EPS") are non-GAAP financial measures which exclude tax benefits related to an India Supreme Court decision on withholding taxes in fiscal year 2021. Refer to the Non-GAAP Financial Measures section below for a reconciliation of our financial results reported in accordance with GAAP to non-GAAP financial results. See Note 12 - Income Taxes of the Notes to Financial Statements (Part II, Item 8 of this Form 10-K) for further discussion. Revenue increased $25.1 billion or 18% driven by growth across each of our segments. Intelligent Cloud revenue increased driven by Azure. Productivity and Business Processes revenue increased driven by Office 365 Commercial and Linkedin. More Personal Computing revenue increased driven by Gaming. Cost of revenue increased $6.2 billion or 13% driven by growth in commercial cloud and Gaming, offset in part by a reduction in depreciation expense due to the change in estimated useful lives of our server and network equipment. Gross margin increased $18.9 billion or 20% driven by growth across each of our segments and the change in estimated useful lives of our server and network equipment. Gross margin percentage increased with the change in estimated useful lives of our server and network equipment. Excluding this impact, gross margin percentage decreased slightly driven by gross margin percentage reduction in More Personal Computing. Commercial cloud gross margin percentage increased 4 points to 71% driven by gross margin percentage improvement in Azure and the change in estimated useful lives of our server and network equipment, offset in part by sales mix shift to Azure. third-party video game royalties, cloud services, and advertising Search advertising revenue, excluding TAC, growth Revenue from search advertising excluding traffic acquisition costs ("TAC") paid to Bing Ads network publishers SUMMARY RESULTS OF OPERATIONS 2021 2020 Percentage Change (In millions, except percentages and per share amounts) Revenue Gross margin Operating income Net income Diluted earnings per share Adjusted net income (non-GAAP) Adjusted diluted earnings per share (non-GAAP) 168,088 $ 115,856 69,916 61,271 8.05 60,651 7.97 143,015 96,937 52,959 44,281 5.76 44,281 5.76 18% 20% 32% 38% 40% 37% 38% Adjusted net income and adjusted diluted earnings per share ("EPS") are non-GAAP financial measures which exclude tax benefits related to an India Supreme Court decision on withholding taxes in fiscal year 2021. Refer to the Non-GAAP Financial Measures section below for a reconciliation of our financial results reported in accordance with GAAP to non-GAAP financial results. See Note 12 - Income Taxes of the Notes to Financial Statements (Part II, Item 8 of this Form 10-K) for further discussion. Revenue increased $25.1 billion or 18% driven by growth across each of our segments. Intelligent Cloud revenue increased driven by Azure. Productivity and Business Processes revenue increased driven by Office 365 Commercial and Linkedin. More Personal Computing revenue increased driven by Gaming. Cost of revenue increased $6.2 billion or 13% driven by growth in commercial cloud and Gaming, offset in part by a reduction in depreciation expense due to the change in estimated useful lives of our server and network equipment. Gross margin increased $18.9 billion or 20% driven by growth across each of our segments and the change in estimated useful lives of our server and network equipment. Gross margin percentage increased with the change in estimated useful lives of our server and network equipment. Excluding this impact, gross margin percentage decreased slightly driven by gross margin percentage reduction in More Personal Computing. Commercial cloud gross margin percentage increased 4 points to 71% driven by gross margin percentage improvement in Azure and the change in estimated useful lives of our server and network equipment, offset in part by sales mix shift to Azure
