Our Chief Executive Officer, who is considered to be our chief operating decision maker, or CODM, reviews financial information presented on an operating segment basis for purposes of making operating decisions and assessing financial performance. Our operating segments are equivalent to our reportable segments.

We report our business in two primary reportable segments - the GPU business and the Tegra Processor business - based on a single underlying graphics architecture.

Our GPU product brands are aimed at specialized markets including GeForce for gamers; Quadro for designers; Tesla and DGX for AI data scientists and big data researchers; and GRID for cloud-based visual computing users. Our Tegra brand incorporates GPUs and multi-core CPUs to drive supercomputing for autonomous robots, drones, and cars, as well as for game consoles and mobile gaming and entertainment devices.

Under the single unifying architecture for our GPU and Tegra Processors, we leverage our visual computing expertise by charging the operating expenses of certain core engineering functions to the GPU business, while charging the Tegra Processor business for the incremental cost of the teams working directly for that business. In instances where the operating expenses of certain functions benefit both reportable segments, our CODM assigns 100% of those expenses to the reportable segment that benefits the most.

The “All Other” category presented below represents the revenue and expenses that our CODM does not assign to either the GPU business or the Tegra Processor business for purposes of making operating decisions or assessing financial performance. The revenue included in all other is Intel licensing revenue and the expenses include stock-based compensation expense, corporate infrastructure and support costs, legal settlement costs, acquisition-related and other costs, and other non-recurring charges and benefits that our CODM deems to be enterprise in nature.

Our CODM does not review any information regarding total assets on a reportable segment basis. Reportable segments do not record inter-segment revenue, and, accordingly, there is none to be reported. The accounting policies for segment reporting are the same as for our consolidated financial statements. The table below presents details of our reportable segments and the “All Other” category.



	GPU		Tegra Processor		All Other			Consolidated
	(In millions)
Year Ended January 26, 2020:
Revenue	$	9,465	$	1,453	$	—		$	10,918
Depreciation and amortization expense	$	322	$	44	$	15		$	381
Operating income (loss)	$	3,806	$	196	$	(1,156	)	$	2,846

Year Ended January 27, 2019:
Revenue	$	10,175	$	1,541	$	—		$	11,716
Depreciation and amortization expense	$	197	$	47	$	18		$	262
Operating income (loss)	$	4,443	$	241	$	(880	)	$	3,804

Year Ended January 28, 2018:
Revenue	$	8,137	$	1,534	$	43		$	9,714
Depreciation and amortization expense	$	123	$	37	$	39		$	199
Operating income (loss)	$	3,507	$	303	$	(600	)	$	3,210



	Year Ended
	January 26, 2020			January 27, 2019			January 28, 2018
	(In millions)
Reconciling items included in "All Other" category:
Unallocated revenue	$	—		$	—		$	43
Stock-based compensation expense	(844		)	(557		)	(391		)
Unallocated cost of revenue and operating expenses	(267		)	(277		)	(237		)
Acquisition-related and other costs	(30		)	(2		)	(15		)
Legal settlement costs	(15		)	(44		)	—
Total	$	(1,156	)	$	(880	)	$	(600	)

Revenue by geographic region is allocated to individual countries based on the location to which the products are initially billed even if our customers’ revenue is attributable to end customers that are located in a different location. The following table summarizes information pertaining to our revenue from customers based on the invoicing address by geographic regions:



	Year Ended
	January 26, 2020		January 27, 2019		January 28, 2018
Revenue:	(In millions)
Taiwan	$	3,025	$	3,360	$	2,991
China (including Hong Kong)	2,731		2,801		1,896
Other Asia Pacific	2,685		2,368		2,066
Europe	992		914		768
United States	886		1,506		1,274
Other countries	599		767		719
Total revenue	$	10,918	$	11,716	$	9,714



	Year Ended
	January 26, 2020		January 27, 2019		January 28, 2018
Revenue:	(In millions)
Gaming	$	5,518	$	6,246	$	5,513
Professional Visualization	1,212		1,130		934
Data Center	2,983		2,932		1,932
Automotive	700		641		558
OEM & Other	505		767		777
Total revenue	$	10,918	$	11,716	$	9,714

The following table presents summarized information for long-lived assets by geographic region. Long-lived assets consist of property and equipment and deposits and other assets, and exclude operating lease assets, goodwill, and intangible assets.



	January 26, 2020		January 27, 2019
Long-lived assets:	(In millions)
United States	$	1,568	$	1,266
Taiwan	114		137
India	51		44
China (including Hong Kong)	28		38
Europe	28		26
Other countries	2		1
Total long-lived assets	$	1,791	$	1,512

One customer represented 11% of our total revenue for fiscal year 2020 and was attributable to the GPU business. No customer represented 10% or more of total revenue for fiscal years 2019 and 2018.

One customer represented 21% of our accounts receivable balance as of January 26, 2020, and one customer represented 19% of our accounts receivable balance as of January 27, 2019.