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Segment Information and Major Customers
 9 Months Ended
May 01, 2021
Segment Reporting [Abstract]  
Segment Information and Major Customers Segment Information and Major Customers
(a)Revenue and Gross Margin by Segment
We conduct business globally and are primarily managed on a geographic basis consisting of three segments: the Americas, EMEA, and APJC. Our management makes financial decisions and allocates resources based on the information it receives from our internal management system. Sales are attributed to a segment based on the ordering location of the customer. We do not allocate research and development, sales and marketing, or general and administrative expenses to our segments in this internal management system because management does not include the information in our measurement of the performance of the operating segments. In addition, we do not allocate amortization and impairment of acquisition-related intangible assets, share-based compensation expense, significant litigation settlements and other contingencies, charges related to asset impairments and restructurings, and certain other charges to the gross margin for each segment because management does not include this information in our measurement of the performance of the operating segments.
Summarized financial information by segment for the third quarter and first nine months of fiscal 2021 and 2020, based on our internal management system and as utilized by our Chief Operating Decision Maker (“CODM”), is as follows (in millions):
Three Months EndedNine Months Ended
May 1,
2021		April 25,
2020		May 1,
2021		April 25, 2020
Revenue:
Americas$7,262 $7,116 $21,430 $22,106 
EMEA3,483 3,136 9,654 9,553 
APJC2,057 1,730 5,608 5,489 
Total$12,803 $11,983 $36,692 $37,147 
Gross margin:
Americas$4,831 $4,828 $14,383 $14,836 
EMEA2,283 2,061 6,322 6,289 
APJC1,331 1,098 3,599 3,511 
Segment total8,445 7,986 24,303 24,636 
Unallocated corporate items(260)(215)(753)(637)
Total$8,185 $7,771 $23,550 $23,999 
Amounts may not sum and percentages may not recalculate due to rounding.
Revenue in the United States was $6.4 billion and $6.3 billion for the third quarter of fiscal 2021 and 2020, respectively, and $19.1 billion and $19.7 billion for the first nine months of fiscal 2021 and 2020, respectively.
(b)Revenue for Groups of Similar Products and Services
We design and sell Internet Protocol (IP)-based networking and other products related to the communications and IT industry and provide services associated with these products and their use.
The following table presents revenue for groups of similar products and services (in millions):
Three Months EndedNine Months Ended
May 1,
2021		April 25,
2020		May 1,
2021		April 25,
2020
Revenue:
Infrastructure Platforms$6,832 $6,447 $19,564 $20,566 
Applications1,426 1,363 4,160 4,211 
Security876 778 2,559 2,343 
Other Products6 9 15 27 
Total Product9,139 8,597 26,298 27,146 
Services3,664 3,386 10,394 10,001 
Total$12,803 $11,983 $36,692 $37,147 
Amounts may not sum due to rounding. We have made certain reclassifications to the product revenue amounts for prior period to conform to the current year presentation.