On Dec. 4, 2025, the General Services Administration (GSA) announced a major expansion of its One Acquisition Solution for Integrated Services Plus (OASIS+) government-wide contract program with Phase II continuous on-ramps and the introduction of five new service Domains across all six OASIS+ solicitations for a total of 13 Domains.
This expansion comes from extensive market research and feedback from the formal Request for Information (RFI) that was posted on June 17, 2025. The new open solicitations and new Domains will increase opportunities for industry partners to provide more comprehensive solutions to federal agency customers. The total service offerings and opportunities for vendors across all 13 OASIS+ Domains are as follows:
- Technical and Engineering
- Research and Development
- Management and Advisory
- Environmental
- Intelligence Services
- Enterprise Solutions
- Facilities Services
- Logistics
- Business Administration (New!)
- Financial Services (New!)
- Human Capital (New!)
- Marketing and Public Relations (New!)
- Social Services (New!)
Update: Pre-Amendment #8 Notice
The Dec. 4 announcement was followed up by a SAM.gov Pre-Amendment #8 Notice issued on Dec. 18, 2025 where GSA provided an update on Phase II On-Ramps, a draft version of the five new Domains Qualifications Matrices and Scorecards, and instructions for an upcoming contract modification for current OASIS+ contract holders.
Continuous on-ramp confirmed
The Pre-Amendment #8 Notice confirmed that the following OASIS+ requests for proposals (RFPs) will continuously remain open:



