Top 100 Contractors in NAICS 51821: Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services, FY2025

Name: Top 100 Contractors in NAICS 51821: Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services, FY2025
Creator: GovTribe

Parent companies by net contract obligations Oct 1, 2024 – Sep 30, 2025 Code page on GovTribe

The top 10 won 47% of FY2025 NAICS 51821 contract dollars

Contract obligations: $3,336,221,045 Net of deobligations, by contracts coded NAICS 51821 or a code under it
Contractors: 955 Parent companies with an obligation
Largest contractor: Amazon Web Services, Inc. $315 million, 8.9% of obligations
Data as of: Oct 14, 2026

Contract actions from FPDS (SAM.gov). How the rankings work · Download all 100 rows as CSV

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)	$314,565,860	8.9%	Rank history: not on the FY2021–FY2023 lists and #3 in FY2024; up 2 since FY2024.
2	International Business Machines Corporation Top agencies VA (Department of Veterans Affairs) GSA (General Services Administration) Treasury (Department of the Treasury)	$271,361,788	7.7%	Rank history: #5 in FY2021, #5 in FY2022, #4 in FY2023 and #5 in FY2024; up 3 since FY2024.
3	Advantaged Solutions, LLC Top agencies DLA (Defense Logistics Agency) Commerce (Department of Commerce)	$261,730,553	7.4%	Rank history: not on the FY2021 list, #3 in FY2022, #5 in FY2023 and #4 in FY2024; up 1 since FY2024.
4	Leidos Holdings, Inc. 3 awardees, including Leidos, Inc. Top agencies DOT (Department of Transportation)	$172,948,496	4.9%	Rank history: #2 in FY2021, #1 in FY2022, #1 in FY2023 and #1 in FY2024; down 3 since FY2024.
5	Microsoft Corporation Top agencies USDA (Department of Agriculture) Army (Department of the Army) DISA (Defense Information Systems Agency)	$161,067,542	4.6%	Rank history: not on the FY2021–FY2022 lists, #33 in FY2023 and #11 in FY2024; up 6 since FY2024.
6	Peraton Inc. 3 awardees, including Peraton Enterprise Solutions LLC Top agencies DHRA (Defense Human Resources Activity) HUD (Department of Housing and Urban Development) DOI (Department of the Interior)	$131,040,640	3.7%	Rank history: not on the FY2021–FY2023 lists and #6 in FY2024; unchanged since FY2024.
7	Guidehouse Inc. Through Peraton Technology Services Inc. Top agencies DHS (Department of Homeland Security)	$105,866,563	3.0%	Rank history: not on the FY2021–FY2023 lists and #7 in FY2024; unchanged since FY2024.
8	Govcio, LLC Top agencies VA (Department of Veterans Affairs)	$88,553,508	2.5%	Rank history: #46 in FY2021, #14 in FY2022, #8 in FY2023 and #9 in FY2024; up 1 since FY2024.
9	General Dynamics Corporation 5 awardees, including General Dynamics Information Technology, Inc. and General Dynamics Mission Systems, Inc. Top agencies DOT (Department of Transportation) VA (Department of Veterans Affairs) USAF (Department of the Air Force)	$69,932,226	2.0%	Rank history: #4 in FY2021, #6 in FY2022, #2 in FY2023 and #2 in FY2024; down 7 since FY2024.
10	Dataminr Inc. Top agencies USAF (Department of the Air Force)	$69,606,970	2.0%	Rank history: not on the FY2021–FY2023 lists and #10 in FY2024; unchanged since FY2024.
11	Monkton, Inc. Top agencies Treasury (Department of the Treasury) DHS (Department of Homeland Security) ED (Department of Education)	$69,116,170	2.0%	Rank history: #66 in FY2021, #37 in FY2022, #25 in FY2023 and #22 in FY2024; up 11 since FY2024.
12	Eagle Harbor, LLC Top agencies DOJ (Department of Justice)	$68,393,183	1.9%	Rank history: #22 in FY2021, #16 in FY2022, #14 in FY2023 and #8 in FY2024; down 4 since FY2024.
13	Priority Fulfillment Services, Inc. Top agencies Treasury (Department of the Treasury)	$54,210,113	1.5%	Rank history: not on the FY2021–FY2024 lists; up 114 since FY2024.
14	Oracle Health Government Services Inc. Through Oracle America, Inc. Top agencies Army (Department of the Army) DISA (Defense Information Systems Agency) DHRA (Defense Human Resources Activity)	$50,989,497	1.4%	Rank history: not on the FY2021–FY2024 lists; up 186 since FY2024.
15	Ignite Digital Federal Services, LLC Top agencies Navy (Department of the Navy) DHA (Defense Health Agency)	$38,617,068	1.1%	Rank history: not on the FY2021 list, #56 in FY2022, #21 in FY2023 and #14 in FY2024; down 1 since FY2024.
16	Ventera LLC Top agencies HHS (Department of Health and Human Services) USDA (Department of Agriculture)	$35,159,441	1.0%	Rank history: not on the FY2021 list, #93 in FY2022, #23 in FY2023 and #18 in FY2024; up 2 since FY2024.
17	Samtek Inc. Top agencies HHS (Department of Health and Human Services)	$34,213,889	1.0%	Rank history: not on the FY2021 list, #52 in FY2022, #36 in FY2023 and #33 in FY2024; up 16 since FY2024.
18	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)	$33,735,608	1.0%	Rank history: #72 in FY2021, #18 in FY2022, #18 in FY2023 and #20 in FY2024; up 2 since FY2024.
19	Accenture Federal Services LLC Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) DOI (Department of the Interior)	$30,988,818	0.9%	Rank history: not on the FY2021–FY2023 lists and #15 in FY2024; down 4 since FY2024.
20	Spinsys-Dine, LLC Top agencies DHA (Defense Health Agency)	$29,170,928	0.8%	Rank history: not on the FY2021–FY2023 lists and #37 in FY2024; up 17 since FY2024.
21	KBR Wyle Services LLC Top agencies Commerce (Department of Commerce)	$29,170,268	0.8%	Rank history: not on the FY2021–FY2023 lists and #31 in FY2024; up 10 since FY2024.
22	Caelum Research Corporation Top agencies Army (Department of the Army)	$28,815,099	0.8%	Rank history: not on the FY2021 list, #43 in FY2022, #24 in FY2023 and #28 in FY2024; up 6 since FY2024.
23	Solid State Scientific Corporation Top agencies USAF (Department of the Air Force)	$28,619,480	0.8%	Rank history: #27 in FY2021, #19 in FY2022, #20 in FY2023 and #24 in FY2024; up 1 since FY2024.
24	Change Healthcare Operations, LLC Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services)	$27,082,993	0.8%	Rank history: not on the FY2021–FY2024 lists; up 122 since FY2024.
25	Manhattan Associates, Inc. Top agencies DHS (Department of Homeland Security)	$25,652,322	0.7%	Rank history: #37 in FY2021, #29 in FY2022, #30 in FY2023 and #32 in FY2024; up 7 since FY2024.
26	Lhdtsv LLC Top agencies Commerce (Department of Commerce)	$24,657,284	0.7%	Rank history: #42 in FY2021, #17 in FY2022, #26 in FY2023 and #36 in FY2024; up 10 since FY2024.
27	Axon Enterprise, Inc. Top agencies VA (Department of Veterans Affairs) DOJ (Department of Justice) Navy (Department of the Navy)	$24,542,552	0.7%	Rank history: not on the FY2021 list, #72 in FY2022, #19 in FY2023 and #30 in FY2024; up 3 since FY2024.
28	Space Sciences and Engineering LLC Top agencies Commerce (Department of Commerce)	$24,345,500	0.7%	Rank history: not on the FY2021–FY2023 lists and #73 in FY2024; up 45 since FY2024.
29	Westat, Inc. Top agencies HHS (Department of Health and Human Services) USDA (Department of Agriculture)	$24,242,247	0.7%	Rank history: #12 in FY2021, #11 in FY2022, #11 in FY2023 and #13 in FY2024; down 16 since FY2024.
30	Harvard Pilgrim Health Care, Inc. Top agencies HHS (Department of Health and Human Services)	$23,108,350	0.7%	Rank history: #13 in FY2021, #13 in FY2022, #16 in FY2023 and #17 in FY2024; down 13 since FY2024.
31	Intelsat General Communications LLC Top agencies USAF (Department of the Air Force) MDA (DOD Missile Defense Agency) Army (Department of the Army)	$22,493,058	0.6%	Rank history: not on the FY2021–FY2022 lists, #28 in FY2023 and #29 in FY2024; down 2 since FY2024.
32	Koniag It Systems, LLC Top agencies DHA (Defense Health Agency) DOS (Department of State) WHS (DOD Washington Headquarters Service)	$19,999,397	0.6%	Rank history: not on the FY2021–FY2024 lists; up 88 since FY2024.
33	Vastec Inc. Top agencies Treasury (Department of the Treasury) Commerce (Department of Commerce) DOT (Department of Transportation)	$19,880,585	0.6%	Rank history: #89 in FY2021 and not on the FY2022–FY2024 lists; up 96 since FY2024.
34	Science Applications International Corporation Top agencies DOI (Department of the Interior) USAF (Department of the Air Force) DTRA (Defense Threat Reduction Agency)	$18,838,681	0.5%	Rank history: #18 in FY2021, #7 in FY2022, not on the FY2023 list and #83 in FY2024; up 49 since FY2024.
35	Iqvia Government Solutions Inc Top agencies HHS (Department of Health and Human Services)	$18,486,883	0.5%	Rank history: not on the FY2021–FY2023 lists and #34 in FY2024; down 1 since FY2024.
36	Alaska Northstar Resources LLC Top agencies USAF (Department of the Air Force)	$17,609,991	0.5%	Rank history: #68 in FY2021, #33 in FY2022, #27 in FY2023 and #23 in FY2024; down 13 since FY2024.
37	Palantir Technologies Inc. 2 awardees, including Palantir USG Inc. Top agencies OSD (Office of the Secretary of Defense) WHS (DOD Washington Headquarters Service)	$17,530,896	0.5%	Rank history: #10 in FY2021, #4 in FY2022, #12 in FY2023 and not on the FY2024 list; up 76 since FY2024.
38	CGI Federal Inc. Top agencies DOT (Department of Transportation) DOI (Department of the Interior) EPA (Environmental Protection Agency)	$15,025,335	0.4%	Rank history: not on the FY2021–FY2024 lists; up 81 since FY2024.
39	Arctic Slope Regional Corporation 3 awardees, including Agile Decision Sciences, LLC, Asrc Federal Cyber, LLC and Asrc Federal Technology Solutions, LLC Top agencies Army (Department of the Army) HHS (Department of Health and Human Services) DHS (Department of Homeland Security)	$14,959,789	0.4%	Rank history: #99 in FY2021, #86 in FY2022 and not on the FY2023–FY2024 lists; returned.
40	Integrated Data Services, LLC Top agencies USAF (Department of the Air Force) WHS (DOD Washington Headquarters Service) OSD (Office of the Secretary of Defense)	$14,567,064	0.4%	Rank history: #54 in FY2021, #40 in FY2022, #43 in FY2023 and #40 in FY2024; unchanged since FY2024.
41	Navsight Holdings Inc. Through Spire Global Subsidiary, Inc. Top agencies Commerce (Department of Commerce) DOT (Department of Transportation)	$13,508,234	0.4%	Rank history: not on the FY2021–FY2024 lists; new.
42	Palmetto Gba, LLC Top agencies HHS (Department of Health and Human Services)	$13,160,729	0.4%	Rank history: not on the FY2021–FY2024 lists; new.
43	IMG - Crown Energy Services Joint Venture, LLC Top agencies DOE (Department of Energy)	$12,800,196	0.4%	Rank history: #30 in FY2021, #53 in FY2022, #31 in FY2023 and #42 in FY2024; down 1 since FY2024.
44	Bytecubed, LLC Top agencies OSD (Office of the Secretary of Defense)	$12,680,126	0.4%	Rank history: #71 in FY2021 and not on the FY2022–FY2024 lists; returned.
45	Research Triangle Institute Top agencies HHS (Department of Health and Human Services)	$12,553,162	0.4%	Rank history: #45 in FY2021, #45 in FY2022, #45 in FY2023 and #41 in FY2024; down 4 since FY2024.
46	Koniag, Inc. Through Kadiak LLC Top agencies DHA (Defense Health Agency)	$12,492,512	0.4%	Rank history: not on the FY2021 list, #84 in FY2022, #37 in FY2023 and #67 in FY2024; up 21 since FY2024.
47	Koniag Management Solutions LLC Top agencies DECA (Defense Commissary Agency) ED (Department of Education)	$12,031,393	0.3%	Rank history: #36 in FY2021, #26 in FY2022, #32 in FY2023 and #35 in FY2024; down 12 since FY2024.
48	Chenega It Enterprise Services, LLC Top agencies EPA (Environmental Protection Agency)	$11,375,713	0.3%	Rank history: #34 in FY2021, #67 in FY2022, #66 in FY2023 and #43 in FY2024; down 5 since FY2024.
49	Yardi Systems, LLC Top agencies HUD (Department of Housing and Urban Development)	$10,831,155	0.3%	Rank history: #97 in FY2021, #71 in FY2022, #50 in FY2023 and #50 in FY2024; up 1 since FY2024.
50	Direktoratet for Romvirksomhet Top agencies Commerce (Department of Commerce)	$10,640,856	0.3%	Rank history: not on the FY2021–FY2023 lists and #39 in FY2024; down 11 since FY2024.
51	Black Cape, Inc. Top agencies OSD (Office of the Secretary of Defense) WHS (DOD Washington Headquarters Service)	$10,571,574	0.3%	Rank history: not on the FY2021–FY2024 lists; new.
52	Vertosoft LLC Top agencies DOJ (Department of Justice) USAF (Department of the Air Force) SSA (Social Security Administration)	$10,541,939	0.3%	Rank history: not on the FY2021–FY2022 lists, #65 in FY2023 and #44 in FY2024; down 8 since FY2024.
53	BAE Systems Through BAE Systems Technology Solutions & Services Inc. Top agencies USAF (Department of the Air Force)	$10,309,861	0.3%	Rank history: not on the FY2021–FY2024 lists; up 95 since FY2024.
54	Medidata Solutions, Inc. Top agencies HHS (Department of Health and Human Services)	$10,173,808	0.3%	Rank history: not on the FY2021–FY2023 lists and #49 in FY2024; down 5 since FY2024.
55	Galapagos Federal Systems LLC Top agencies USAF (Department of the Air Force)	$9,996,343	0.3%	Rank history: not on the FY2021–FY2023 lists and #57 in FY2024; up 2 since FY2024.
56	Google Public Sector LLC Top agencies Army (Department of the Army) DISA (Defense Information Systems Agency) Navy (Department of the Navy)	$9,991,707	0.3%	Rank history: not on the FY2021–FY2022 lists, #92 in FY2023 and #96 in FY2024; up 40 since FY2024.
57	Complete Discovery Source Inc. Top agencies FTC (Federal Trade Commission) DOJ (Department of Justice) Treasury (Department of the Treasury)	$9,790,713	0.3%	Rank history: not on the FY2021 list, #79 in FY2022, not on the FY2023 list and #64 in FY2024; up 7 since FY2024.
58	Fedresults, Inc. Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) Army (Department of the Army)	$9,613,055	0.3%	Rank history: #23 in FY2021, #38 in FY2022, #48 in FY2023 and #60 in FY2024; up 2 since FY2024.
59	Everlaw Inc. Top agencies DOJ (Department of Justice) DOI (Department of the Interior) DHS (Department of Homeland Security)	$9,600,747	0.3%	Rank history: not on the FY2021–FY2024 lists; up 62 since FY2024.
60	Echelon Services, LLC Top agencies Army (Department of the Army)	$9,246,341	0.3%	Rank history: not on the FY2021–FY2023 lists and #59 in FY2024; down 1 since FY2024.
61	Premier Healthcare Solutions, Inc. Top agencies HHS (Department of Health and Human Services)	$9,112,119	0.3%	Rank history: not on the FY2021–FY2023 lists and #58 in FY2024; down 3 since FY2024.
62	Conduent Federal Solutions LLC Top agencies SSA (Social Security Administration)	$9,092,336	0.3%	Rank history: not on the FY2021–FY2024 lists; new.
63	Minburn Technology Group, LLC Top agencies ED (Department of Education) FEC (Federal Election Commission)	$9,026,435	0.3%	Rank history: not on the FY2021–FY2024 lists; up 265 since FY2024.
64	Intelligent Waves LLC Top agencies USAF (Department of the Air Force)	$8,322,388	0.2%	Rank history: #31 in FY2021, #15 in FY2022, #7 in FY2023 and #25 in FY2024; down 39 since FY2024.
65	Kaukahi LLC Top agencies Army (Department of the Army)	$8,255,054	0.2%	Rank history: not on the FY2021–FY2024 lists; new.
66	Astraeus Operations, LLC Top agencies DOS (Department of State)	$8,159,335	0.2%	Rank history: not on the FY2021–FY2024 lists; new.
67	NEC National Security Systems, Inc. Top agencies DHS (Department of Homeland Security)	$7,950,000	0.2%	Rank history: not on the FY2021–FY2023 lists and #63 in FY2024; down 4 since FY2024.
68	Simple Technology Solutions Inc. Top agencies DOI (Department of the Interior)	$7,111,927	0.2%	Rank history: not on the FY2021–FY2023 lists and #47 in FY2024; down 21 since FY2024.
69	Allium US Holding LLC Top agencies Navy (Department of the Navy) NASA (National Aeronautics and Space Administration)	$7,021,272	0.2%	Rank history: not on the FY2021–FY2022 lists, #86 in FY2023 and #76 in FY2024; up 7 since FY2024.
70	The IQ Business Group, Inc. Top agencies DOI (Department of the Interior)	$6,936,219	0.2%	Rank history: not on the FY2021–FY2024 lists; up 56 since FY2024.
71	CVS Health Corporation Through CVS Healthspire Payor & Life Sciences LLC Top agencies HHS (Department of Health and Human Services)	$6,857,981	0.2%	Rank history: #83 in FY2021, #73 in FY2022, #77 in FY2023 and not on the FY2024 list; returned.
72	Oracle America, Inc. Top agencies USDA (Department of Agriculture) FCC (Federal Communications Commission) USAF (Department of the Air Force)	$6,752,732	0.2%	Rank history: not on the FY2021–FY2024 lists; new.
73	Edgewater Federal Solutions, Inc. Top agencies DOE (Department of Energy)	$6,459,678	0.2%	Rank history: #50 in FY2021, #49 in FY2022, #72 in FY2023 and #65 in FY2024; down 8 since FY2024.
74	Integrityone Partners, Inc. Top agencies DHS (Department of Homeland Security)	$6,035,441	0.2%	Rank history: not on the FY2021–FY2023 lists and #54 in FY2024; down 20 since FY2024.
75	Riva Solutions Inc Top agencies DOL (Department of Labor)	$5,978,712	0.2%	Rank history: not on the FY2021–FY2023 lists and #77 in FY2024; up 2 since FY2024.
76	Trussworks Inc. Top agencies HUD (Department of Housing and Urban Development)	$5,762,971	0.2%	Rank history: not on the FY2021–FY2024 lists; new.
77	Mpza LLC Top agencies HHS (Department of Health and Human Services)	$5,642,510	0.2%	Rank history: not on the FY2021–FY2023 lists and #70 in FY2024; down 7 since FY2024.
78	Healthverity Inc. Top agencies HHS (Department of Health and Human Services)	$5,560,140	0.2%	Rank history: not on the FY2021–FY2022 lists, #93 in FY2023 and #72 in FY2024; down 6 since FY2024.
79	Acumen LLC Top agencies HHS (Department of Health and Human Services)	$5,387,012	0.2%	Rank history: #38 in FY2021, #42 in FY2022, #49 in FY2023 and #48 in FY2024; down 31 since FY2024.
80	Forum One Communications Corporation Top agencies DOI (Department of the Interior)	$5,378,171	0.2%	Rank history: not on the FY2021–FY2024 lists; new.
81	California Department of Public Health Top agencies SSA (Social Security Administration) HHS (Department of Health and Human Services)	$5,328,137	0.2%	Rank history: not on the FY2021–FY2024 lists; up 49 since FY2024.
82	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	0.2%	Rank history: not on the FY2021–FY2024 lists; up 52 since FY2024.
83	Sayari Analytics, LLC Top agencies DHS (Department of Homeland Security) DOS (Department of State)	$5,326,912	0.2%	Rank history: not on the FY2021–FY2024 lists; new.
84	Slingshot Aerospace Inc. Top agencies Commerce (Department of Commerce)	$5,312,951	0.2%	Rank history: not on the FY2021–FY2024 lists; new.
85	DLT Solutions, LLC Top agencies DHS (Department of Homeland Security) VA (Department of Veterans Affairs) National Gallery of Art	$5,259,890	0.1%	Rank history: not on the FY2021–FY2024 lists; up 124 since FY2024.
86	Distributed Computing System Solutions Provider, Inc. Top agencies SEC (Securities and Exchange Commission)	$5,186,244	0.1%	Rank history: not on the FY2021 list, #78 in FY2022, not on the FY2023 list and #82 in FY2024; down 4 since FY2024.
87	Department of State Health Services Top agencies SSA (Social Security Administration) HHS (Department of Health and Human Services)	$5,163,122	0.1%	Rank history: not on the FY2021–FY2023 lists and #99 in FY2024; up 12 since FY2024.
88	Deloitte 2 awardees, including Deloitte Consulting LLP and Deloitte Financial Advisory Services LLP Top agencies VA (Department of Veterans Affairs) DOL (Department of Labor)	$5,072,681	0.1%	Rank history: not on the FY2021–FY2023 lists and #62 in FY2024; down 26 since FY2024.
89	Saab Inc. Top agencies DOT (Department of Transportation)	$5,072,000	0.1%	Rank history: not on the FY2021–FY2024 lists; up 293 since FY2024.
90	Casepoint, LLC Top agencies OSD (Office of the Secretary of Defense)	$5,012,160	0.1%	Rank history: not on the FY2021–FY2023 lists and #85 in FY2024; down 5 since FY2024.
91	Acro Systems Inc Top agencies HHS (Department of Health and Human Services)	$4,940,161	0.1%	Rank history: not on the FY2021–FY2024 lists; up 74 since FY2024.
92	Chenega Healthcare Services LLC Top agencies SEC (Securities and Exchange Commission)	$4,833,382	0.1%	Rank history: not on the FY2021–FY2024 lists; up 40 since FY2024.
93	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 and #88 in FY2024; down 5 since FY2024.
94	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 and not on the FY2024 list; up 11 since FY2024.
95	Cssi Inc. Top agencies DOT (Department of Transportation)	$4,705,185	0.1%	Rank history: not on the FY2021–FY2023 lists and #79 in FY2024; down 16 since FY2024.
96	BI2 Technologies, LLC Top agencies DHS (Department of Homeland Security)	$4,575,000	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
97	Open SAN Consulting LLC Top agencies DISA (Defense Information Systems Agency)	$4,568,230	0.1%	Rank history: not on the FY2021–FY2022 lists, #58 in FY2023 and #52 in FY2024; down 45 since FY2024.
98	Alpha Communications Services LLC Top agencies DISA (Defense Information Systems Agency)	$4,481,560	0.1%	Rank history: not on the FY2021 list, #96 in FY2022, not on the FY2023 list and #81 in FY2024; down 17 since FY2024.
99	Arrowpoint Corporation Top agencies USAF (Department of the Air Force)	$4,473,101	0.1%	Rank history: not on the FY2021–FY2023 lists and #97 in FY2024; down 2 since FY2024.
100	Savan Group, LLC Top agencies HHS (Department of Health and Human Services) DOJ (Department of Justice) USDA (Department of Agriculture)	$4,454,598	0.1%	Rank history: not on the FY2021–FY2024 lists; up 67 since FY2024.

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100 of 955 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	$3,336,221,045	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 $3.53 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. 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.
Fiscal year 2025 ran Oct 1, 2024 – Sep 30, 2025. The Department of Defense reports its contract actions to FPDS about 90 days late, so a fiscal year is ranked once they're in, in February, and the list doesn't change after.
Rank changes compare with FY2024. "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. The step from FY2024 takes the color of the rank change beside it.
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 FY2025?

1. Amazon Web Services, Inc. ($315M), 2. International Business Machines Corporation ($271M), 3. Advantaged Solutions, LLC ($262M), 4. Leidos Holdings, Inc. ($173M), 5. Microsoft Corporation ($161M), 6. Peraton Inc. ($131M), 7. Guidehouse Inc. ($106M), 8. Govcio, LLC ($88.6M), 9. General Dynamics Corporation ($69.9M), 10. Dataminr Inc. ($69.6M).

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