GSA OASIS+ Phase II

One Acquisition Solution for Integrated Services Plus (OASIS+) – Phase II

Oasis+ summary

GSAGGSA OASIS+ is a $60 billion-plus, Best-in-Class IDIQ GWAC designed to streamline access to a wide array of integrated professional services for federal agencies. Under Phase I, the program encompasses eight core domains. There is no single contract ceiling, and agencies can issue task orders of any size, with unlimited awards across the pool. The vehicle offers a ten-year ordering period with five-year base plus one five-year option, leveraging streamlined solicitation procedures to help agencies meet mission-critical needs quickly.

GSA OASIS+ Phase II—initiated by the June 17, 2025 Request for Information—builds on this foundation by introducing five new functional domains to better reflect evolving agency requirements and broaden contractor participation. These new domains open significant opportunities for both incumbent Phase I contractors and new entrants, with size standards ranging up to $47 million for certain small business set-asides. Agencies will use a similar self-scoring evaluation process to Phase I, ensuring a consistent, efficient means of awarding task orders. The Phase II solicitation is anticipated later in 2025, with on-ramp provisions for small businesses and socioeconomic set-asides, offering an expanded pathway to compete under this high-demand, federal government “one-stop shop” for professional services.

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OASIS Plus in a Nutshell:

Item	Details
Agency:	General Services Administration (GSA)
Title:	OASIS+ (One Acquisition Solution for Integrated Services Plus) Phase II
Solicitation Number:	SAM Notice ID: 47QRCA21N0001
Status:	Sources Sought – RFI
Due Date:	FI due date: Jul 08, 2025 05:00 pm EDT
Contract Period:	TBD
Type of Contract:	Multiple Award Contract (MAC) IDIQ
Number of Awards:	TBD
Maximum Contract Ceiling Value:	No ceiling
NAICS Codes:	238220, 238290, 238320, 238990, 336611, 485999, 488190, 488490, 488999, 531312, 541310, 541350, 541360, 541370, 541380, 541611, 541612, 541613, 541614, 541618, 541620, 541690, 541713, 541714, 541715, 541720, 541990, 561210, 561499, 561611, 562112, 562211, 562910, 621511
Size Standard:	(a) Small Business HUBZone Small Business Service-Disabled Veteran-Owned Small Business Total Small Business Woman-Owned Small Business Unrestricted
Pools:	OASIS+ will group service offerings within Domains that follow a category management structure.
Partnering:	Joint Ventures and CTAs (Prime/Sub) are allowed
Domains:	Management and Advisory Technical and Engineering Research and Development Intelligence Services Enterprise Solutions Environmental Services Facilities Logistics Phase II Domains: Business Administration & Transformation Financial Services Human Capital & Workforce Development Marketing & Public Relations Social Services & Community Engagement
Qualification Criteria:	Qualifying Project Experience Federal Experience Government-approved systems and rates Other certifications

Solicitation Documents:

Item	Link
Latest OASIS+ Phase II page on Sam.gov	Webpage
Phase II RFI on SAM.gov (June 17, 2025)	PDF File
Phase II RFI Questionnaire on SAM.gov (June 17, 2025)	Link
Phase II Questions In-take Form on SAM.gov	Link

GDIC Related Content:

Item	Link
Article: OASIS+ Phase II: Unlocking New Domains	Post Link
Webinar: OASIS+ On-Ramp	YouTube Link
OASIS+ Phase I Case Studies	Webpage
HCaTS Case Study: Winning 3 HCaTS Contracts	Webpage
OASIS+ Contract Support Services	Webpage

Evaluation Criteria

To receive a Domain award, the offer must meet or exceed a specified qualification threshold. The Offeror has the discretion to use any combination of qualifications detailed in the qualification matrix to achieve the threshold. The qualifications matrix includes both project experience and other relevant qualifications (e.g., corporate level qualifications, applicable certifications).

Ultimately, the Offeror is responsible for clearly demonstrating that the claimed criteria are met. GSA will remove from consideration any proposal element where the Offeror does not clearly demonstrate that the claimed criteria is met, based on being non-responsive (non-compliant) to the solicitation requirements.

Criteria in the Qualifications Matrix fall into the following categories:

Qualifying Project Experience

The Offeror may propose using a maximum of 5 Qualifying Projects (QPs). The Offeror is limited to only 5 QPs to achieve QP-based criteria. A number of criteria in the qualifications matrix are derived from these QPs. Relevance: With respect to Relevance of QPs, that criterion is based on Relevance to the specific Domain’s scope.

Federal Experience

These qualifications do not need to come from the QPs, and can be obtained through other projects if These qualifications will generally apply across GSA OASIS Plus (OASIS+) Domains.

Government-approved systems and rates

These qualifications are based on systems and rates approved by a cognizant Federal These qualifications will generally apply across GSA OASIS Plus (OASIS+) Domains.

Other certifications

These qualifications are based on certifications issued by third party (i.e., non-Governmental) These qualifications will generally apply across GSA OASIS Plus (OASIS+) Domains.

OASIS+ Enrollment & Awards

According to GSA, OASIS Plus (OASIS+) will be an open enrollment opportunity, with the intention of enrolling more contractors. GSA intends to award separate IDIQ contracts under each of the following categories:

8(a) small business
HUBZone small business
Service-disabled veteran-owned small business
Total small business
Women-owned small business
Unrestricted

Qualification standards for each IDIQ will be designed to achieve targeted socioeconomic representation. Unrestricted solicitations may require a higher qualifying threshold and additional qualifying criteria, such as: past performance exceeding subcontracting goals, greenhouse gas (GHG) emissions disclosures, experience performing IAW applicable labor laws (e.g., Service Contract Labor Standards, Collective Bargaining Agreements), experience with and/or plan to support other priorities (e.g., AbilityOne and minority-owned SBs).

Proposal Preparation

GSA OASIS Plus (OASIS+) is a Self-Scoring solicitation, meaning bidders score themselves on one or more factors according to the evaluation criteria (or evaluation matrix) and provide documentation to support their assertions. To succeed in this endeavored:

a bidder must understand the qualification requirements and evaluation criteria
recognize its qualifications that best match the requirements and achieve the highest score
gather and provide documentation and evidence to substantiate those qualifications

Compared to other solicitations, in self-scoring solicitations each bidder must do the work of both a bidder and a contracting officer at the same time.

How can GDIC Help?

GDI Consulting’s government opportunity experts support clients from early-stage market intelligence through to compliant, score-maximized proposal delivery. In OASIS+ Phase I, we prepared 97 successful proposals—achieving a 100% win rate in the Unrestricted track and 95% in Total Small Business. Our services are responsive and collaborative, keeping clients engaged and informed at every step. From identifying and managing qualified opportunities to submitting proposals that meet self-scoring and technical requirements, we adapt to your goals and integrate your input into each engagement. Contact our expert Federal Government proposal writers now!

Ask Us How We Can Help You Win a Place in OASIS+