Vertical analysis Amazon.com, Inc.is the largest Internet retailer in the United States. Amazon's income statements through income from operations for two recent years are as follows (in mH!ions):...

Amazon.com,Inc.

Operating Income Statements

For the Years Ended December 31 (in millions)

Year 2

Year 1

Product sales

$70,080

$60,903

Service sales

18,908

13,549

Total sales

$88,988

$74,452

Cost of sales

$62,752

$54,181

Fulfillment

10,766

8,585

Marketing

4,332

3,133

Technology and content

9,275

6,565

General and administrative

1,552

1,129

Other operating expense (income), net

133

114

Total operating expenses

$88,810

$73,707

Income from operations

$ 178

$ 745