OASIS+: GSA's Premier Professional Services GWAC Explained

OASIS+ (One Acquisition Solution for Integrated Services Plus) is the General Services Administration's flagship Government-Wide Acquisition Contract (GWAC) for professional services. It replaced both OASIS and MAPS in 2024, consolidating the government's largest professional services vehicles into a single, modernized platform.

OASIS+ has no ceiling — GSA can award any amount of task orders through the vehicle. For any federal contractor in management consulting, professional services, scientific research, or complex IT, an OASIS+ contract is one of the most valuable assets in your portfolio.

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What OASIS+ Covers

OASIS+ is a multiple-award, indefinite-delivery, indefinite-quantity (MAIDIQ) GWAC covering a broad range of professional services across six Domains:

1. Management and Advisory — Strategic management, organizational performance, change management, financial management consulting
2. Technical and Engineering — Engineering services, R&D, science and technology, systems engineering
3. Research and Development — Basic and applied research, program experimentation
4. Intelligence — Intelligence analysis, threat assessment, open-source analysis
5. Enterprise Solutions — IT solutions, digital transformation, enterprise architecture
6. Logistics and Supply Chain — Supply chain management, logistics, transportation planning

Labor categories are not predefined. Unlike some GWACs with specific labor categories, OASIS+ accepts open-market labor categories negotiated at the task order level.

Period of performance: 10-year base ordering period. Initial awards were made in 2024.

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OASIS+ Set-Aside Tracks

OASIS+ has four separate tracks based on small business classification:

1. Unrestricted: Open to all businesses, including large. No size restriction.
2. Small Business (SB): Small businesses under the applicable NAICS size standard for the task order
3. 8(a) Small Business: SBA-certified 8(a) firms only
4. HUBZone Small Business: SBA-certified HUBZone firms only
5. SDVOSB Small Business: SBA-certified Service-Disabled Veteran-Owned firms only
6. WOSB Small Business: SBA-certified Women-Owned Small Business firms only

Key advantage: If you hold multiple certifications (e.g., 8(a) + HUBZone), you can hold seats on multiple OASIS+ tracks simultaneously. This dramatically expands your task order pipeline.

A firm with an SB seat, 8(a) seat, and HUBZone seat can respond to task order competitions on all three tracks — tripling their opportunity base from a single GWAC vehicle.

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Getting a Seat on OASIS+: The Competition

Contract Ceiling Competition

OASIS+ is a continuous open enrollment GWAC — GSA periodically opens the competition for new seats on each track. The competition is for a "seat" on the vehicle, not for a specific task order.

What the seat competition evaluates:

Experience: Past performance demonstrating relevant experience across the Domains you are applying for. More experience in more Domains → stronger application.

Technical Expertise: Demonstrated technical capability through key personnel qualifications, certifications (ISO, CMMI, PMI), and corporate certifications.

Past Performance Quality: CPARS ratings or equivalent references showing Exceptional/Very Good performance on relevant contracts.

Small Business Credits (for set-aside tracks): Holding SBA certifications earns additional evaluation credits in set-aside track competitions.

Preparing Your OASIS+ Application

Document your experience broadly. Unlike a specific RFP, OASIS+ evaluates your breadth across Domains. Compile past performance examples for every relevant Domain — management consulting, technical services, R&D, logistics.

Maintain active CPARS records. Past performance evaluations are a major factor. If you have strong CPARS ratings on relevant contracts, make sure you can access and cite them.

Certify in advance. If you have ISO 9001, CMMI Level 2+, PMI certifications, or similar, they strengthen your OASIS+ application. If you plan to get certified, time it before your application.

Key personnel résumés must be current and relevant. Key personnel must have verifiable credentials matching the Domains you claim.

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Winning Task Orders on OASIS+

Holding an OASIS+ seat is the beginning, not the end. Task orders are awarded through mini-competitions among OASIS+ holders in the relevant track.

Task Order Competition Process

1. Agency issues a Task Order Request (TOR) to all OASIS+ holders in the relevant track (or a subset if the agency narrows the field)
2. OASIS+ holders submit task order proposals (typically 15–30 page responses)
3. Agency evaluates and awards to the best-value offeror
4. Winner receives a task order with its own scope, period, and value

TOR response timelines: 15–30 days is common for task orders. Build a proposal team that can respond quickly.

Task Order Proposal Strategy

For OASIS+ task order competitions:

• Technical approach must be specific to the agency's unique requirement — not generic consulting language
• Past performance must be directly analogous to the task order scope and scale
• Key personnel résumés must match the labor categories requested — every task order RFQ specifies key positions
• Price must be competitive relative to other OASIS+ holders' typical labor rates

Relationship Building on OASIS+

Unlike traditional contracts where you meet one contracting officer, OASIS+ can be used by any federal agency. This creates a massive but diffuse customer base.

Focus your business development on 3–5 target agencies rather than pursuing every OASIS+ task order government-wide. Build relationships with the program managers and acquisition staff at your target agencies, and position for task order competitions 3–6 months before TOR release.

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OASIS+ for Small Businesses: The Set-Aside Advantage

The small business tracks (SB, 8(a), HUBZone, SDVOSB, WOSB) are where OASIS+ is most valuable for small firms.

Fewer competitors: The SB track has far fewer holders than the Unrestricted track. A task order competition on the SB track might attract 5–15 competitive responses vs. 30–50 on the Unrestricted track. Your win probability is meaningfully higher.

Agencies have small business spending goals: An agency's OASIS+ contracting officer can meet their agency's small business obligations by placing orders on the set-aside tracks. This creates a structural demand for SB track task orders.

Stacking certifications multiplies opportunity: A firm on the SB, 8(a), and HUBZone tracks can receive TOR solicitations from all three pools — three times the pipeline from one vehicle.

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OASIS+ vs. Other Major GWACs

For professional services (management consulting, program management, financial advisory, research), OASIS+ is the premier vehicle. For IT products and solutions, SEWP V or STARS III may be more appropriate.

Many established contractors hold seats on OASIS+ (for professional services) AND SEWP V (for IT products) — covering the two largest professional services and IT GWAC vehicles.

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Key Takeaways

• OASIS+ is GSA's flagship professional services GWAC — no ceiling, 10-year ordering period, covering 6 service Domains.
• Six tracks including four small business set-aside tracks (SB, 8(a), HUBZone, SDVOSB, WOSB) — holding multiple track seats multiplies your task order pipeline.
• Seat competition evaluates experience breadth, past performance quality, and key personnel — prepare applications with examples across all relevant Domains.
• Task order mini-competitions require fast response — typically 15–30 day response windows; build a capable, rapid-response proposal team.
• Target 3–5 agencies for OASIS+ business development; do not try to pursue the entire government at once.
• The SB track is particularly valuable — fewer competitors and agency small business spending goals create structural demand for set-aside task orders.

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