The General Service Administration (GSA) One Acquisition Solution for Integrated Services (OASIS) is a multiple award, Indefinite Delivery Indefinite Quantity (IDIQ) contract that provides flexible and innovative solutions for complex professional services. OASIS includes seven separate government-wide multiple award IDIQ contracts which are individually referred to as “Pools” within OASIS. These Pools are designed to cover six core service disciplines – Program Management, Management Consulting, Logistics, Engineering, Scientific and Financial; FMS's Pool 1 contract enable it to perform management, scientific, and technical services for all government agencies.

As a GSA-designated Best-In-Class contract, OASIS is available for use by all Federal government agencies and spans a variety of mission spaces across the professional services domain. With reduced procurement lead times and low administrative costs, Federal agencies have access to pre-certified and “best-in-class” contractors, subcontracting flexibility with teaming determined at task order level, no limits on contract or task order ceiling values, decentralized ordering, and more.