Defense Enterprise Office Solution (DEOS) Department of Defense (DoD) Office 365 Operations and Maintenance

The Defense Information Systems Agency (DISA) is seeking sources for operations and maintenance support of the Defense Enterprise Office Solution (DEOS) Department of Defense Office 365 environment across three classification levels: Impact Level 5 (NIPRNet with 137,000 users), Impact Level 6 (SIPRNet with 350,000 users plus Five Eyes tenants), and Impact Level 7 (Top-Secret with approximately 150,000 users). Interested contractors must demonstrate advanced Microsoft 365 engineering expertise in Azure Government environments, comprehensive cybersecurity and Risk Management Framework implementation capabilities, knowledge management and training development competencies, and the ability to rapidly mobilize 75-100 personnel within 15-30 days. Key qualifications include interim or final Top-Secret Facility Clearance, minimum Secret clearance for all staff, Microsoft 365 Administrator Expert Certification for key personnel, and CMMI Services Level 5 certification for prime contractors with Level 3 for subcontractors. Responses addressing required capabilities and special requirements must not exceed seven pages and should be submitted via email to elizabeth.a.bono.civ@mail.mil and michelle.l.rand.civ@mail.mil by April 29, 2026 at 4:00 PM Eastern Standard Time. This is a market research notice only and does not constitute a binding solicitation or commitment to award a contract.

The anticipated contract period spans from April 3, 2027 through April 2, 2032, consisting of a one-year base period and four one-year optional periods, with work performed at DISA Headquarters in Fort Meade, Maryland; DISA Columbus, Ohio; or contractor-approved secure facilities. General Dynamics Information Technology is the incumbent contractor performing under GSA Single-Award Blanket Purchase Agreement Contract Number 47QTCA21A0001, with current performance extending through May 4, 2026. No set-aside designation has been applied to this procurement, which classifies under NAICS 541512 (Computer Systems Design Services) and PSC DA01 (IT and Telecom - Business Application/Application Development Support Services). The contract value and specific award amounts have not been disclosed in this sources sought notice, as this is preliminary market research to identify capable contractors prior to formal solicitation. Potential bidders should note this requirement will require significant personnel with specialized security clearances and Microsoft 365 expertise to support one of the Department of Defense's largest collaborative computing environments.