Top 100 Contractors in NAICS 51821: Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services, Aug 2025–Jul 2026

Name: Top 100 Contractors in NAICS 51821: Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services, Aug 2025–Jul 2026
Creator: GovTribe
License: https://creativecommons.org/licenses/by/4.0/

Parent companies by net contract obligations Aug 1, 2025 – Jul 31, 2026 Code page on GovTribe

The latest 12 months. See the newest fiscal year's list: Top Contractors in NAICS 51821: Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services, FY2025.

The top 10 won 45% of NAICS 51821 contract dollars from August 2025 through July 2026

Contract obligations: $4,019,358,823 Net of deobligations, by contracts coded NAICS 51821 or a code under it
Contractors: 861 Parent companies with an obligation
Largest contractor: Amazon Web Services, Inc. $645 million, 15.2% of obligations
Data as of: Nov 5, 2026

Contract actions from FPDS (SAM.gov). How the rankings work · Download all 100 rows as CSV · Free to reuse with credit to GovTribe (CC BY 4.0)

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	Amazon Web Services, Inc. 2 awardees Top agencies Navy (Department of the Navy) Army (Department of the Army) USAF (Department of the Air Force)	$645,462,142	15.2%	Rank history: not on the FY2021–FY2023 lists, #3 in FY2024 and #1 in FY2025; unchanged since Aug 2024–Jul 2025.
2	Microsoft Corporation 3 awardees, including Github Inc. Top agencies Army (Department of the Army) DISA (Defense Information Systems Agency) USDA (Department of Agriculture)	$252,801,850	6.0%	Rank history: not on the FY2021–FY2022 lists, #33 in FY2023, #11 in FY2024 and #5 in FY2025; up 4 since Aug 2024–Jul 2025.
3	Leidos Holdings, Inc. 2 awardees, including Leidos, Inc. Top agencies DOT (Department of Transportation) USAF (Department of the Air Force)	$180,342,002	4.2%	Rank history: #2 in FY2021, #1 in FY2022, #1 in FY2023, #1 in FY2024 and #4 in FY2025; up 1 since Aug 2024–Jul 2025.
4	International Business Machines Corporation Top agencies VA (Department of Veterans Affairs) GSA (General Services Administration) Treasury (Department of the Treasury)	$161,898,479	3.8%	Rank history: #5 in FY2021, #5 in FY2022, #4 in FY2023, #5 in FY2024 and #2 in FY2025; down 2 since Aug 2024–Jul 2025.
5	General Dynamics Corporation 2 awardees, including General Dynamics Information Technology, Inc. and General Dynamics Mission Systems, Inc. Top agencies USAF (Department of the Air Force) VA (Department of Veterans Affairs) DOT (Department of Transportation)	$154,597,711	3.6%	Rank history: #4 in FY2021, #6 in FY2022, #2 in FY2023, #2 in FY2024 and #9 in FY2025; up 2 since Aug 2024–Jul 2025.
6	Advantaged Solutions, LLC Top agencies DLA (Defense Logistics Agency) Commerce (Department of Commerce)	$132,943,992	3.1%	Rank history: not on the FY2021 list, #3 in FY2022, #5 in FY2023, #4 in FY2024 and #3 in FY2025; down 3 since Aug 2024–Jul 2025.
7	Minburn Technology Group, LLC Top agencies DOJ (Department of Justice) ED (Department of Education) FTC (Federal Trade Commission)	$124,808,017	2.9%	Rank history: not on the FY2021–FY2024 lists and #61 in FY2025; up 52 since Aug 2024–Jul 2025.
8	Govcio, LLC Top agencies VA (Department of Veterans Affairs)	$110,598,424	2.6%	Rank history: #46 in FY2021, #14 in FY2022, #8 in FY2023, #9 in FY2024 and #8 in FY2025; up 1 since Aug 2024–Jul 2025.
9	Guidehouse Inc. 4 awardees, including Peraton Technology Services Inc. and Peraton Inc. Top agencies DHS (Department of Homeland Security) DOI (Department of the Interior) USAF (Department of the Air Force)	$75,775,579	1.8%	Rank history: not on the FY2021–FY2023 lists, #7 in FY2024 and #7 in FY2025; down 1 since Aug 2024–Jul 2025.
10	Monkton, Inc. Top agencies Treasury (Department of the Treasury) ED (Department of Education) DHS (Department of Homeland Security)	$74,381,328	1.8%	Rank history: #66 in FY2021, #37 in FY2022, #25 in FY2023, #22 in FY2024 and #11 in FY2025; up 6 since Aug 2024–Jul 2025.
11	Databricks Federal LLC Top agencies DHS (Department of Homeland Security) Treasury (Department of the Treasury) GSA (General Services Administration)	$73,364,136	1.7%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
12	Peraton Inc. 3 awardees, including Peraton Enterprise Solutions LLC Top agencies Commerce (Department of Commerce) GSA (General Services Administration) DHRA (Defense Human Resources Activity)	$71,019,100	1.7%	Rank history: not on the FY2021–FY2023 lists, #6 in FY2024 and #6 in FY2025; down 7 since Aug 2024–Jul 2025.
13	Oracle Health Government Services Inc. Through Oracle America, Inc. Top agencies Army (Department of the Army) USAF (Department of the Air Force) DHRA (Defense Human Resources Activity)	$69,179,935	1.6%	Rank history: not on the FY2021–FY2024 lists and #14 in FY2025; up 13 since Aug 2024–Jul 2025.
14	Pcg-Smx JV, LLC Top agencies Navy (Department of the Navy)	$66,112,453	1.6%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
15	Koniag, Inc. 6 awardees, including Koniag It Systems, LLC, Koniag Management Solutions LLC and Koniag Emerging Technologies LLC Top agencies DECA (Defense Commissary Agency) DHA (Defense Health Agency) DOS (Department of State)	$61,210,216	1.4%	Rank history: not on the FY2021 list, #84 in FY2022, #37 in FY2023, #67 in FY2024 and #15 in FY2025; up 20 since Aug 2024–Jul 2025.
16	Google LLC 2 awardees, including Google Public Sector LLC Top agencies Army (Department of the Army) DLA (Defense Logistics Agency) USDA (Department of Agriculture)	$59,446,395	1.4%	Rank history: not on the FY2021–FY2023 lists, #100 in FY2024 and #42 in FY2025; up 50 since Aug 2024–Jul 2025.
17	Acentra Health LLC Top agencies DHS (Department of Homeland Security)	$53,067,752	1.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
18	Priority Fulfillment Services, Inc. Top agencies Treasury (Department of the Treasury)	$52,480,733	1.2%	Rank history: not on the FY2021–FY2024 lists and #13 in FY2025; down 6 since Aug 2024–Jul 2025.
19	Ignite Digital Federal Services, LLC Top agencies Navy (Department of the Navy) DHA (Defense Health Agency)	$44,015,160	1.0%	Rank history: not on the FY2021 list, #56 in FY2022, #21 in FY2023, #14 in FY2024 and #16 in FY2025; down 5 since Aug 2024–Jul 2025.
20	Eagle Harbor, LLC Top agencies DOJ (Department of Justice)	$41,910,480	1.0%	Rank history: #22 in FY2021, #16 in FY2022, #14 in FY2023, #8 in FY2024 and #12 in FY2025; down 10 since Aug 2024–Jul 2025.
21	The Boeing Company 2 awardees, including Jeppesen Foreflight, Inc. and Foreflight LLC Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) Army (Department of the Army)	$41,616,414	1.0%	Rank history: #72 in FY2021, #18 in FY2022, #18 in FY2023, #20 in FY2024 and #19 in FY2025; up 1 since Aug 2024–Jul 2025.
22	The Timken Company Through CGI Federal Inc. Top agencies DOT (Department of Transportation) EPA (Environmental Protection Agency) DOI (Department of the Interior)	$36,739,336	0.9%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
23	Uavionix Corp Top agencies DOT (Department of Transportation)	$35,266,691	0.8%	Rank history: not on the FY2021–FY2024 lists and #97 in FY2025; up 52 since Aug 2024–Jul 2025.
24	Kbr, Inc. Through KBR Wyle Services, LLC Top agencies Commerce (Department of Commerce)	$34,057,206	0.8%	Rank history: #24 in FY2021, #24 in FY2022, #29 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
25	Deloitte 2 awardees, including Deloitte Consulting LLP and Deloitte Financial Advisory Services LLP Top agencies VA (Department of Veterans Affairs) DOL (Department of Labor)	$32,584,409	0.8%	Rank history: not on the FY2021–FY2023 lists, #62 in FY2024 and #85 in FY2025; up 52 since Aug 2024–Jul 2025.
26	CGI Federal Inc. Top agencies DOT (Department of Transportation) DOI (Department of the Interior) DHS (Department of Homeland Security)	$31,220,956	0.7%	Rank history: not on the FY2021–FY2024 lists and #39 in FY2025; up 112 since Aug 2024–Jul 2025.
27	BI2 Technologies, LLC Top agencies DHS (Department of Homeland Security)	$29,687,150	0.7%	Rank history: not on the FY2021–FY2024 lists and #92 in FY2025; new, not ranked in Aug 2024–Jul 2025.
28	Caelum Research Corporation Top agencies Army (Department of the Army)	$29,535,470	0.7%	Rank history: not on the FY2021 list, #43 in FY2022, #24 in FY2023, #28 in FY2024 and #24 in FY2025; down 8 since Aug 2024–Jul 2025.
29	Black Cape, Inc. Top agencies WHS (DOD Washington Headquarters Service) OSD (Office of the Secretary of Defense)	$29,315,676	0.7%	Rank history: not on the FY2021–FY2024 lists and #50 in FY2025; up 41 since Aug 2024–Jul 2025.
30	Intellibridge, LLC Through Bytecubed, LLC Top agencies WHS (DOD Washington Headquarters Service) OSD (Office of the Secretary of Defense)	$29,171,375	0.7%	Rank history: not on the FY2021–FY2024 lists and #46 in FY2025; new, not ranked in Aug 2024–Jul 2025.
31	Solid State Scientific Corporation Top agencies USAF (Department of the Air Force) Navy (Department of the Navy)	$27,597,153	0.6%	Rank history: #27 in FY2021, #19 in FY2022, #20 in FY2023, #24 in FY2024 and #25 in FY2025; down 8 since Aug 2024–Jul 2025.
32	The Chenega Corporation 7 awardees, including Astraeus Operations, LLC, Chenega Agile Real-Time Solutions LLC and Chenega It Enterprise Services, LLC Top agencies DOS (Department of State) FCC (Federal Communications Commission) EPA (Environmental Protection Agency)	$27,391,777	0.6%	Rank history: #94 in FY2021, #63 in FY2022, #69 in FY2023, not on the FY2024 list and #21 in FY2025; new, not ranked in Aug 2024–Jul 2025.
33	Lhdtsv LLC Top agencies Commerce (Department of Commerce)	$26,991,326	0.6%	Rank history: not on the FY2021–FY2024 lists and #27 in FY2025; new, not ranked in Aug 2024–Jul 2025.
34	Change Healthcare Operations, LLC Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services)	$26,397,937	0.6%	Rank history: not on the FY2021–FY2025 lists; down 13 since Aug 2024–Jul 2025.
35	Manhattan Associates, Inc. Top agencies DHS (Department of Homeland Security)	$26,341,340	0.6%	Rank history: #37 in FY2021, #29 in FY2022, #30 in FY2023, #32 in FY2024 and #26 in FY2025; down 10 since Aug 2024–Jul 2025.
36	The Cadmus Group LLC Through Ventera LLC Top agencies USDA (Department of Agriculture) HHS (Department of Health and Human Services)	$25,244,309	0.6%	Rank history: not on the FY2021–FY2024 lists and #17 in FY2025; new, not ranked in Aug 2024–Jul 2025.
37	Oracle America, Inc. Top agencies USDA (Department of Agriculture) FCC (Federal Communications Commission) USAF (Department of the Air Force)	$25,002,347	0.6%	Rank history: not on the FY2021–FY2024 lists and #69 in FY2025; up 93 since Aug 2024–Jul 2025.
38	Dataminr Inc. Top agencies USAF (Department of the Air Force)	$24,349,485	0.6%	Rank history: not on the FY2021–FY2023 lists, #10 in FY2024 and #10 in FY2025; down 27 since Aug 2024–Jul 2025.
39	Space Sciences and Engineering LLC Top agencies Commerce (Department of Commerce)	$24,345,500	0.6%	Rank history: not on the FY2021–FY2023 lists, #73 in FY2024 and #29 in FY2025; up 39 since Aug 2024–Jul 2025.
40	Accenture Federal Services LLC Top agencies USAF (Department of the Air Force) DOI (Department of the Interior) DHA (Defense Health Agency)	$23,661,855	0.6%	Rank history: not on the FY2021–FY2023 lists, #15 in FY2024 and #20 in FY2025; down 23 since Aug 2024–Jul 2025.
41	Intelsat General Communications LLC Top agencies USAF (Department of the Air Force) MDA (DOD Missile Defense Agency) Army (Department of the Army)	$23,435,793	0.6%	Rank history: not on the FY2021–FY2022 lists, #28 in FY2023, #29 in FY2024 and #32 in FY2025; down 13 since Aug 2024–Jul 2025.
42	Axon Enterprise, Inc. Top agencies VA (Department of Veterans Affairs) DOJ (Department of Justice) NSF (National Science Foundation)	$22,297,902	0.5%	Rank history: not on the FY2021 list, #72 in FY2022, #19 in FY2023, #30 in FY2024 and #28 in FY2025; down 23 since Aug 2024–Jul 2025.
43	Science Applications International Corporation Top agencies DOI (Department of the Interior) USAF (Department of the Air Force) DTRA (Defense Threat Reduction Agency)	$20,514,533	0.5%	Rank history: #18 in FY2021, #7 in FY2022, not on the FY2023 list, #83 in FY2024 and #35 in FY2025; down 7 since Aug 2024–Jul 2025.
44	Alaska Northstar Resources LLC Top agencies USAF (Department of the Air Force)	$18,424,010	0.4%	Rank history: #68 in FY2021, #33 in FY2022, #27 in FY2023, #23 in FY2024 and #37 in FY2025; down 15 since Aug 2024–Jul 2025.
45	Samtek Inc. Top agencies HHS (Department of Health and Human Services)	$18,104,074	0.4%	Rank history: not on the FY2021 list, #52 in FY2022, #36 in FY2023, #33 in FY2024 and #18 in FY2025; down 18 since Aug 2024–Jul 2025.
46	Iqvia Government Solutions Inc Top agencies HHS (Department of Health and Human Services)	$17,108,318	0.4%	Rank history: not on the FY2021–FY2023 lists, #34 in FY2024 and #36 in FY2025; down 12 since Aug 2024–Jul 2025.
47	KBR Wyle Services LLC Top agencies Commerce (Department of Commerce)	$16,222,943	0.4%	Rank history: not on the FY2021–FY2023 lists, #31 in FY2024 and #23 in FY2025; down 6 since Aug 2024–Jul 2025.
48	Westat, Inc. Top agencies HHS (Department of Health and Human Services) USDA (Department of Agriculture)	$15,234,356	0.4%	Rank history: #12 in FY2021, #11 in FY2022, #11 in FY2023, #13 in FY2024 and #30 in FY2025; down 17 since Aug 2024–Jul 2025.
49	Palmetto Gba, LLC Top agencies HHS (Department of Health and Human Services)	$14,779,026	0.3%	Rank history: not on the FY2021–FY2024 lists and #44 in FY2025; down 7 since Aug 2024–Jul 2025.
50	Direktoratet for Romvirksomhet Top agencies Commerce (Department of Commerce)	$14,381,917	0.3%	Rank history: not on the FY2021–FY2023 lists, #39 in FY2024 and #49 in FY2025; down 13 since Aug 2024–Jul 2025.
51	Navsight Holdings Inc. Through Spire Global Subsidiary, Inc. Top agencies Commerce (Department of Commerce)	$13,751,595	0.3%	Rank history: not on the FY2021–FY2024 lists and #43 in FY2025; up 62 since Aug 2024–Jul 2025.
52	Vastec Inc. Top agencies Treasury (Department of the Treasury) Commerce (Department of Commerce)	$12,699,714	0.3%	Rank history: #89 in FY2021 and not on the FY2022–FY2025 lists; down 12 since Aug 2024–Jul 2025.
53	Research Triangle Institute Top agencies HHS (Department of Health and Human Services)	$12,324,974	0.3%	Rank history: #45 in FY2021, #45 in FY2022, #45 in FY2023, #41 in FY2024 and #47 in FY2025; down 9 since Aug 2024–Jul 2025.
54	Edge Ops LLC Top agencies DHS (Department of Homeland Security)	$12,210,000	0.3%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
55	Integrated Data Services, LLC Top agencies USAF (Department of the Air Force) WHS (DOD Washington Headquarters Service)	$12,088,813	0.3%	Rank history: #54 in FY2021, #40 in FY2022, #43 in FY2023, #40 in FY2024 and #41 in FY2025; down 6 since Aug 2024–Jul 2025.
56	Lexisnexis Special Services Inc 5 awardees, including Relx Inc., Elsevier Inc. and Lnrs Data Services Inc. Top agencies DOJ (Department of Justice) DHS (Department of Homeland Security) Treasury (Department of the Treasury)	$11,563,969	0.3%	Rank history: not on the FY2021 list, #70 in FY2022, #53 in FY2023, #27 in FY2024 and not on the FY2025 list; up 68 since Aug 2024–Jul 2025.
57	Yardi Systems, LLC Top agencies HUD (Department of Housing and Urban Development)	$11,128,212	0.3%	Rank history: #97 in FY2021, #71 in FY2022, #50 in FY2023, #50 in FY2024 and #48 in FY2025; down 4 since Aug 2024–Jul 2025.
58	Red Canyon Technologies, LLC Top agencies USAF (Department of the Air Force)	$10,630,546	0.3%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
59	Arctic Slope Regional Corporation 3 awardees, including Asrc Federal Cyber, LLC, Agile Decision Sciences, LLC and Asrc Federal Technology Solutions, LLC Top agencies Army (Department of the Army) DHS (Department of Homeland Security)	$10,602,034	0.2%	Rank history: #99 in FY2021, #86 in FY2022, not on the FY2023–FY2024 lists and #40 in FY2025; up 24 since Aug 2024–Jul 2025.
60	Vertosoft LLC Top agencies USAF (Department of the Air Force) DOJ (Department of Justice) SSA (Social Security Administration)	$10,597,933	0.2%	Rank history: not on the FY2021–FY2022 lists, #65 in FY2023, #44 in FY2024 and #51 in FY2025; down 3 since Aug 2024–Jul 2025.
61	Medidata Solutions, Inc. Top agencies HHS (Department of Health and Human Services)	$10,153,072	0.2%	Rank history: not on the FY2021–FY2023 lists, #49 in FY2024 and #53 in FY2025; down 7 since Aug 2024–Jul 2025.
62	California Department of Public Health Top agencies SSA (Social Security Administration) HHS (Department of Health and Human Services)	$9,658,513	0.2%	Rank history: not on the FY2021–FY2024 lists and #78 in FY2025; up 29 since Aug 2024–Jul 2025.
63	Spinsys-Dine, LLC Top agencies DHA (Defense Health Agency)	$9,353,167	0.2%	Rank history: not on the FY2021–FY2023 lists, #37 in FY2024 and #22 in FY2025; down 48 since Aug 2024–Jul 2025.
64	Crown Innovations, Inc. Top agencies DOE (Department of Energy)	$9,350,000	0.2%	Rank history: not on the FY2021–FY2025 lists; up 38 since Aug 2024–Jul 2025.
65	Everlaw Inc. Top agencies DOJ (Department of Justice) DOI (Department of the Interior) DHS (Department of Homeland Security)	$9,325,680	0.2%	Rank history: not on the FY2021–FY2024 lists and #57 in FY2025; up 83 since Aug 2024–Jul 2025.
66	Premier Healthcare Solutions, Inc. Top agencies HHS (Department of Health and Human Services)	$9,107,119	0.2%	Rank history: not on the FY2021–FY2023 lists, #58 in FY2024 and #59 in FY2025; up 276 since Aug 2024–Jul 2025.
67	Saab, Inc. Top agencies DOT (Department of Transportation)	$8,922,900	0.2%	Rank history: not on the FY2021–FY2024 lists and #86 in FY2025; up 21 since Aug 2024–Jul 2025.
68	The Tomorrow Companies Inc. Top agencies Commerce (Department of Commerce)	$8,832,261	0.2%	Rank history: not on the FY2021–FY2025 lists; up 50 since Aug 2024–Jul 2025.
69	Conduent Federal Solutions LLC Top agencies SSA (Social Security Administration)	$8,589,241	0.2%	Rank history: not on the FY2021–FY2024 lists and #60 in FY2025; down 11 since Aug 2024–Jul 2025.
70	Trace3 Government, LLC Top agencies Army (Department of the Army) HHS (Department of Health and Human Services) DOI (Department of the Interior)	$8,288,975	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
71	Kaukahi LLC Top agencies Army (Department of the Army)	$8,255,054	0.2%	Rank history: not on the FY2021–FY2024 lists and #63 in FY2025; new, not ranked in Aug 2024–Jul 2025.
72	Qintel LLC Top agencies USCYBERCOM (Department of Defense Cyber Command)	$8,000,000	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
73	NEC Corporation of America Through NEC National Security Systems, Inc. Top agencies DHS (Department of Homeland Security)	$7,950,000	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
74	Complete Discovery Source Inc. Top agencies FTC (Federal Trade Commission) Treasury (Department of the Treasury) PBGC (Pension Benefit Guaranty Corporation)	$7,888,838	0.2%	Rank history: not on the FY2021 list, #79 in FY2022, not on the FY2023 list, #64 in FY2024 and #55 in FY2025; down 29 since Aug 2024–Jul 2025.
75	IMG - Crown Energy Services Joint Venture, LLC Top agencies DOE (Department of Energy)	$7,841,239	0.2%	Rank history: #30 in FY2021, #53 in FY2022, #31 in FY2023, #42 in FY2024 and #45 in FY2025; down 29 since Aug 2024–Jul 2025.
76	Department of State Health Services Top agencies SSA (Social Security Administration) HHS (Department of Health and Human Services)	$7,839,115	0.2%	Rank history: not on the FY2021–FY2023 lists, #99 in FY2024 and #84 in FY2025; up 16 since Aug 2024–Jul 2025.
77	The IQ Business Group, Inc. Top agencies DOI (Department of the Interior)	$7,076,464	0.2%	Rank history: not on the FY2021–FY2024 lists and #67 in FY2025; up 8 since Aug 2024–Jul 2025.
78	Trussworks Inc. Top agencies HUD (Department of Housing and Urban Development)	$7,066,527	0.2%	Rank history: not on the FY2021–FY2024 lists and #73 in FY2025; up 6 since Aug 2024–Jul 2025.
79	Acro Systems Inc Top agencies HHS (Department of Health and Human Services)	$6,648,248	0.2%	Rank history: not on the FY2021–FY2024 lists and #88 in FY2025; up 93 since Aug 2024–Jul 2025.
80	Stealth Solutions Inc. Top agencies DHS (Department of Homeland Security)	$6,596,480	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
81	Fedresults, Inc. Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) OSD (Office of the Secretary of Defense)	$6,579,858	0.2%	Rank history: #23 in FY2021, #38 in FY2022, #48 in FY2023, #60 in FY2024 and #56 in FY2025; down 25 since Aug 2024–Jul 2025.
82	Echelon Services, LLC Top agencies Army (Department of the Army)	$6,522,960	0.2%	Rank history: not on the FY2021–FY2023 lists, #59 in FY2024 and #58 in FY2025; down 22 since Aug 2024–Jul 2025.
83	Forum One Communications Corporation Top agencies DOI (Department of the Interior)	$6,366,111	0.1%	Rank history: not on the FY2021–FY2024 lists and #77 in FY2025; up 44 since Aug 2024–Jul 2025.
84	Simple Technology Solutions Inc. Top agencies DOI (Department of the Interior)	$6,286,593	0.1%	Rank history: not on the FY2021–FY2023 lists, #47 in FY2024 and #65 in FY2025; down 32 since Aug 2024–Jul 2025.
85	Acumen LLC Top agencies HHS (Department of Health and Human Services)	$6,262,692	0.1%	Rank history: #38 in FY2021, #42 in FY2022, #49 in FY2023, #48 in FY2024 and #76 in FY2025; down 34 since Aug 2024–Jul 2025.
86	Integrityone Partners, Inc. Top agencies DHS (Department of Homeland Security)	$6,035,441	0.1%	Rank history: not on the FY2021–FY2023 lists, #54 in FY2024 and #71 in FY2025; up 19 since Aug 2024–Jul 2025.
87	Allium US Holding LLC Top agencies Navy (Department of the Navy) NASA (National Aeronautics and Space Administration)	$5,793,366	0.1%	Rank history: not on the FY2021–FY2022 lists, #86 in FY2023, #76 in FY2024 and #66 in FY2025; down 26 since Aug 2024–Jul 2025.
88	Bart & Associates, LLC Through Intelligent Waves LLC Top agencies USAF (Department of the Air Force)	$5,784,625	0.1%	Rank history: not on the FY2021–FY2024 lists and #62 in FY2025; new, not ranked in Aug 2024–Jul 2025.
89	Integrated Solutions and Services Unlimited, Inc. Top agencies VA (Department of Veterans Affairs)	$5,653,304	0.1%	Rank history: not on the FY2021–FY2025 lists; up 21 since Aug 2024–Jul 2025.
90	Edgewater Federal Solutions, Inc. Top agencies DOE (Department of Energy)	$5,625,000	0.1%	Rank history: #50 in FY2021, #49 in FY2022, #72 in FY2023, #65 in FY2024 and #70 in FY2025; down 27 since Aug 2024–Jul 2025.
91	Thomson Reuters Special Services LLC Top agencies HHS (Department of Health and Human Services) DHS (Department of Homeland Security) USAF (Department of the Air Force)	$5,327,107	0.1%	Rank history: not on the FY2021–FY2024 lists and #79 in FY2025; up 59 since Aug 2024–Jul 2025.
92	Sayari Labs Inc. Through Sayari Analytics, LLC Top agencies DHS (Department of Homeland Security) DOS (Department of State)	$5,326,912	0.1%	Rank history: not on the FY2021–FY2024 lists and #80 in FY2025; new, not ranked in Aug 2024–Jul 2025.
93	TD Synnex Corporation Through DLT Solutions, LLC Top agencies DHS (Department of Homeland Security) VA (Department of Veterans Affairs) Army (Department of the Army)	$5,114,814	0.1%	Rank history: not on the FY2021–FY2024 lists and #82 in FY2025; new, not ranked in Aug 2024–Jul 2025.
94	International Health Terminology Standards Development Organisation Top agencies HHS (Department of Health and Human Services)	$4,765,864	0.1%	Rank history: #88 in FY2021, #77 in FY2022, #84 in FY2023, #88 in FY2024 and #89 in FY2025; unchanged since Aug 2024–Jul 2025.
95	Savan Group, LLC Top agencies DOT (Department of Transportation) DOJ (Department of Justice) USDA (Department of Agriculture)	$4,759,452	0.1%	Rank history: not on the FY2021–FY2024 lists and #96 in FY2025; down 2 since Aug 2024–Jul 2025.
96	Aermor LLC Top agencies Navy (Department of the Navy)	$4,734,093	0.1%	Rank history: not on the FY2021–FY2022 lists, #95 in FY2023, not on the FY2024 list and #90 in FY2025; new, not ranked in Aug 2024–Jul 2025.
97	Kansas Health Information Network, Inc. Top agencies CPSC (Consumer Product Safety Commission)	$4,657,504	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
98	Battelle Memorial Institute Top agencies USAF (Department of the Air Force)	$4,535,872	0.1%	Rank history: #92 in FY2021, #75 in FY2022, #87 in FY2023, #95 in FY2024 and #98 in FY2025; down 1 since Aug 2024–Jul 2025.
99	Muon Space Inc. Top agencies Commerce (Department of Commerce)	$4,508,000	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
100	Morphworks Inc. Through Arrowpoint Corporation Top agencies USAF (Department of the Air Force)	$4,473,101	0.1%	Rank history: not on the FY2021–FY2024 lists and #95 in FY2025; new, not ranked in Aug 2024–Jul 2025.

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100 of 861 contractors listed here. See the rest on GovTribe.

Rankings for the codes under NAICS 51821

Code	Net obligations	Largest contractor
518210 Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services	$4,019,358,823	Amazon Web Services, Inc.

How this ranking works

Source: every contract action FPDS records (as published on SAM.gov) in the period, as GovTribe received it.
Amounts are net obligations: what was obligated, less what was deobligated. Shares are of $4.25 billion obligated before deobligations, so they never pass 100%.
Parent companies: each action counts under the ultimate parent its award record names, or under the awardee when it names none, so no dollar counts twice. An awardee whose own actions mostly name no parent, and that no other company's actions name as their parent, rolls up its SAM.gov registration's chain of parent companies: it counts under the first company there that other companies' actions name as their parent, or under the parent most of a company's own actions name, whichever comes first; with neither, under the highest company in the chain with federal contracts of its own. Joint ventures stay companies of their own. Parents of the same name (Inc., LLC and the like aside) count as one company, since FPDS records a company's parent under more than one UEI over time. GovTribe corrects a few parents and names by hand; see the corrections.
Period: the trailing 12 months end with the last month that ended at least 90 days ago, because the Department of Defense reports its contract actions to FPDS about 90 days late. The list is rebuilt each night.
Rank changes compare with Aug 2024–Jul 2025. "New" marks a company outside that period's top 500, and "Returned" one of those that was on an earlier fiscal year's list.
Rank lines show each company's rank on every fiscal year's list since FY2021, #1 at the top, on a scale that gives the top of the list more room. A dashed stretch spans years it wasn't on the list.
Placeholder recipients FPDS uses when it names no company ("Miscellaneous Foreign Contractors" and the like) aren't ranked.

Quick answers

Who were the top 10 NAICS 51821 contractors in Aug 2025–Jul 2026?

1. Amazon Web Services, Inc. ($645M), 2. Microsoft Corporation ($253M), 3. Leidos Holdings, Inc. ($180M), 4. International Business Machines Corporation ($162M), 5. General Dynamics Corporation ($155M), 6. Advantaged Solutions, LLC ($133M), 7. Minburn Technology Group, LLC ($125M), 8. Govcio, LLC ($111M), 9. Guidehouse Inc. ($75.8M), 10. Monkton, Inc. ($74.4M).

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