Tick marks
Diane Greene Photographer: David Paul Morris/Bloomberg
SEATTLE, WA - JUNE 16: An Amazon logo is seen inside the Amazon corporate headquarters on June 16, 2017 in Seattle, Washington. Amazon announced that it will buy Whole Foods Market, Inc. for over $13 billion.  (Photo by David Ryder/Getty Images)
The Pentagon
The Amazon.com logo is displayed outside the company's fulfillment center in Kenosha, Wisconsin, U.S., on Tuesday, Aug. 1, 2017.  Photographer: Jim Young/Bloomberg
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Performance tuning