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Segment Information and Major Customers | 6 Months Ended
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Jan. 25, 2025
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 second quarter and first six months of fiscal 2025 and 2024, based on our internal management system and as utilized by our Chief Operating Decision Maker (“CODM”), is as follows (in millions):
| Three Months Ended |  | Six Months Ended
| January 25, 2025 |  | January 27, 2024 |  | January 25, 2025 |  | January 27, 2024
Revenue: |  |  |  |  |  |  |
Americas | $ | 8,202 |  |  | $ | 7,510 |  |  | $ | 16,454 |  |  | $ | 16,532 |
EMEA | 3,855 |  |  | 3,484 |  |  | 7,444 |  |  | 7,148 |
APJC | 1,934 |  |  | 1,798 |  |  | 3,934 |  |  | 3,779 |
Total | $ | 13,991 |  |  | $ | 12,791 |  |  | $ | 27,832 |  |  | $ | 27,459 |
Gross margin: |  |  |  |  |  |  |
Americas | $ | 5,545 |  |  | $ | 4,932 |  |  | $ | 11,285 |  |  | $ | 10,901 |
EMEA | 2,750 |  |  | 2,373 |  |  | 5,272 |  |  | 4,919 |
APJC | 1,320 |  |  | 1,226 |  |  | 2,648 |  |  | 2,554 |
Segment total | 9,614 |  |  | 8,532 |  |  | 19,204 |  |  | 18,373 |
Unallocated corporate items | (503) |  |  | (315) |  |  | (972) |  |  | (599) |
Total | $ | 9,111 |  |  | $ | 8,217 |  |  | $ | 18,232 |  |  | $ | 17,774 |
Amounts may not sum due to rounding. Revenue in the United States was $7.4 billion and $6.7 billion for the second quarter of fiscal 2025 and 2024, respectively, and $14.8 billion and $14.9 billion for the first six months of fiscal 2025 and 2024, 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 Ended |  | Six Months Ended
| January 25, 2025 |  | January 27, 2024 |  | January 25, 2025 |  | January 27, 2024
Revenue: |  |  |  |  |  |  |
Networking | $ | 6,850 |  |  | $ | 7,081 |  |  | $ | 13,603 |  |  | $ | 15,904 |
Security | 2,111 |  |  | 973 |  |  | 4,129 |  |  | 1,984 |
Collaboration | 996 |  |  | 989 |  |  | 2,081 |  |  | 2,106 |
Observability | 277 |  |  | 188 |  |  | 535 |  |  | 378 |
Total Product | 10,234 |  |  | 9,232 |  |  | 20,348 |  |  | 20,371 |
Services | 3,757 |  |  | 3,559 |  |  | 7,484 |  |  | 7,088 |
Total | $ | 13,991 |  |  | $ | 12,791 |  |  | $ | 27,832 |  |  | $ | 27,459 |
Amounts may not sum due to rounding.

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- Definition The entire disclosure for reporting segments including data and tables. Reportable segments include those that meet any of the following quantitative thresholds a) it's reported revenue, including sales to external customers and intersegment sales or transfers is 10 percent or more of the combined revenue, internal and external, of all operating segments b) the absolute amount of its reported profit or loss is 10 percent or more of the greater, in absolute amount of 1) the combined reported profit of all operating segments that did not report a loss or 2) the combined reported loss of all operating segments that did report a loss c) its assets are 10 percent or more of the combined assets of all operating segments. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 48 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482785/280-10-55-48 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards 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