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Buy through us
Explore buy through us
Category management
Government property for sale or lease
Personal property (tangible goods)
Real property (real estate and buildings) for public use
Real property sales
Vehicle sales
Products and services
Human capital
Industrial products and services
Office management
Professional services
Security and protection
Transportation and logistics services
Purchasing programs
Assisted acquisition
Commercial platforms
Emergency acquisition basic ordering agreements
Federal strategic sourcing initiative
Fleet management
HCaTS and HCaTS SB
OASIS and OASIS SB
Requisition programs
State and local programs
Shared services
Payroll services
Support services for CABs
Sell to government
Explore sell to government
Step 1: Learn about government contracting
Ways you can sell to government
How to access contract opportunities
Conduct market research
Step 2: Compete for a contract
Register your business
Certify as a small business
Become a schedule holder
Market your business
Research active solicitations
Respond to a solicitation
What to expect during the award process
Step 3: Manage your contract
Comply with contractual requirements
Handle contract modifications
Monitor past performance evaluations
Real estate
Explore real estate
Design and construction
3D-4D building information modeling
Computer-aided design standards
Engineering
Project management information system
Prospectus thresholds
Facilities management
Security
Tenant services
Water quality management
Our properties
Owned and leased properties
Regional buildings
Renting property
Real estate services
Leasing
Real property disposal
Reimbursable services (RWA)
For businesses seeking opportunities
For workers in federal buildings
Voice of the customer
Workplace optimization
Commercial coworking
Federal coworking
Policy and regulations
Explore policy and regulations
Acquisition management policy
Aviation management policy
Information technology policy
Real property management policy
Relocation management policy
Travel management policy
Vehicle management policy
Regulations
Federal acquisition regulations
Federal management regulations
Federal travel regulations
Small business
Explore small business
Small business goals
Register your business
Explore business models
Research the federal market
Subcontracting and other partnerships
Forecast of contracting opportunities
Small business resources
Small business contacts
Small business events
Videos
Travel
Explore travel
Plan a trip
Per diem rates
Transportation (airfare rates, POV rates, etc.)
Lodging
Travel charge card
Travel and lodging services
E-gov travel service (ETS)
Rideshare
Travel category schedule
Federal travel regulation
Technology
Explore technology
Build websites and digital services
Purchasing programs
Cloud computing services
Cybersecurity products and services
Governmentwide acquisition contracts
MAS information technology
USAccess
Government initiatives
Artificial Intelligence
Cybersecurity
Emerging citizen technology
FedRAMP
Federal identity, credentials, and access management
Robotic process automation community
Technology modernization fund
Training
About us
Explore about us
Background and history
Overview
Mission and strategic goals
Role in presidential transitions
Careers
Get an internship
Launch your career
Elevate your professional career
Discover special hiring paths
Resources and related links
Events and training
Our training programs
Newsroom
Agency blog
Congressional testimony
GSA does that podcast
News releases
Speeches
Videos
Organization
Leadership directory
Federal Acquisition Service
Public Buildings Service
Staff offices
Regions
Region 1 | New England
Region 2 | Northeast and Caribbean
Region 3 | Mid-Atlantic
Region 4 | Southeast Sunbelt
Region 5 | Great Lakes
Region 6 | Heartland
Region 7 | Greater Southwest
Region 8 | Rocky Mountain
Region 9 | Pacific Rim
Region 10 | Northwest/Arctic
Region 11 | National Capital Region
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  8. Domains, scope and labor categories

Domains, scope and labor categories

The contract scope is organized by domains and North American Industry Classification System or NAICS codes.

Domains: The contract scope is organized by domains or functional groupings of related services spanning multiple NAICs codes. Domains and the NAICS codes listed under the domains are designed to align order requirements to qualified industry partners. Each domain is limited to the NAICS codes and associated size standards specifically listed under that domain.

NAICS codes: The North American Industry Classification System or NAICS is the standard used by federal statistical agencies in classifying entity establishments for the purpose of collecting, analyzing, and publishing statistical data related to the U.S. business economy.

Learn more about NAICS codes

Scope

The OASIS+ contracts cover services that are: primarily noncommercial, with the allowance for commercial services task orders; classified and unclassified requirements; and within the continental United States and outside the continental United States. All OASIS+ task orders must be within scope of the respective OASIS+ IDIQ contract for which it is awarded, provided the Ordering Contracting Officer or OCO determines the principal-purpose NAICS code for the order to be one of the OASIS+ NAICS codes. If the OCO determines its requirement has a principal-purpose NAICS code outside one of the OASIS+ NAICS codes, the requirement is not within scope of OASIS+.

Domains
 

Management and Advisory

This domain includes a full range of management and consulting services that can improve a federal agency’s performance, aid its endeavors to meet mission goals, and provide operating advice and assistance on administrative and management issues.   

View NAICS codes for the M&A domain

Technical and Engineering 

This domain includes requirements to provide specific engineering, geoscience, or other technical professional skills, such as those performed by engineers, geologists, geophysicists, and technicians, required to handle specific operating conditions and problems for the benefit of the government. Work under this Domain typically involves the application of physical laws and principles of engineering in the design, development, and utilization of machines, materials, instruments, processes, and systems; and providing expert advice and assistance on technical functions and issues. 

View NAICS codes for the T&E domain

Research and Development 

This domain includes any requirements in support of Research and Development activities. R&D activities may be aimed at achieving either specific or general objectives. The term R&D includes basic research, applied research and experimental development. Services include conducting R&D in: the physical, engineering and life sciences; nanotechnology; biotechnology; and social sciences and humanities. 

View NAICS codes for the R&D domain

Intelligence Services 

This domain focuses on Command, Control, Communications, Intelligence, Surveillance, and Reconnaissance mission requirements. Services may support organizational and technological capabilities that improve situational awareness and enhance command and control strategies within defense and intelligence environments. 

View NAICS codes for the INTEL domain

Environmental

This domain supports agencies in meeting their environmental requirements and streamlining the contracting process by providing a faster, more cost-efficient means to meet environmental objectives. Requirements typically involve multidisciplinary teams of scientists, engineers, and other technicians with expertise in areas such as air and water quality, asbestos contamination, remediation, ecological restoration, and environmental law. Environmental consulting could consist of support such as Planning and Documentation Services for the development, facilitation, and coordination of or for environmental initiatives or mandates in areas of chemical, radiological, or hazardous materials. 

View NAICS codes for the ENV domain

Facilities 

Services in this domain include any and all services required to maintain and operate buildings, paved services, utilities infrastructure, and real property assets and equipment. This could include major facilities support such as Department of Defense installations, hospitals, cemeteries, and other federal or industrial real property, but does not include major or primary purpose construction. GSA has included a wide range of services found in facilities contracts because of their historical use to support total facilities solutions. 

View NAICS codes for the FAC domain

Logistics 

Services on this domain include comprehensive logistics solutions, including planning and designing, implementing, or operating systems or facilities for the movement of supplies, equipment, or people by road, air, water, rail, or pipeline. 

View NAICS codes for the LOG domain

Enterprise Solutions

This domain is focused on requirements that are large-dollar, wide-reaching, and highly complex in scope, often spanning multiple disciplines and/or locations, and requiring many different types of labor and expertise. It is for the procurement of highly technical, new and emerging and/or specialized mission objectives that require special management attention and oversight because of: 

  • the importance to the agency mission; 
  • the high-level development, operating, or maintenance costs; 
  • the high risk; 
  • the high return; or 
  • their significant role in the administration of agency-wide programs, systems, finances, property, or other resources. 

This domain also includes non-IT services in support of national security systems in accordance with 40 USC § 11103(a). By design, this domain shares overlapping NAICS with other domains within OASIS+. 

The enterprise solutions domain will only be available for the Unrestricted contract.

Scope for Information Technology & Non-Information Technology

What’s in scope / out of scope

Information Technology or IT, by definition, means any equipment, or interconnected system(s) or subsystem(s) of equipment that is used for the automatic acquisition, storage, analysis, evaluation, manipulation, management, movement, control, display, switching, interchange, transmission, or reception of data or information by the agency. For purposes of this definition, this includes equipment used by the agency directly or by a contractor under a contract with the agency that requires its use, or to a significant extent, its use in the performance of a service or the furnishing of a product.

IT is considered an ancillary support service or product under OASIS+ and may be included only when the service or product is integral and necessary to complete a total integrated solution. “Non-IT” includes any service or equipment that is acquired by a Contractor incidental to a contract or contains embedded IT that is used as an integral part of the service or product, but the principal function of which is not the acquisition, storage, analysis, evaluation, manipulation, management, movement, control, display, switching, interchange, transmission, or reception of data or information. (For example, heating, ventilation, and air conditioning equipment, such as thermostats or temperature control devices, and medical equipment where IT is integral to its operation, is non-IT).

Non-IT also includes any equipment or services related to a National Security System in accordance with 40 USC § 11103 (a). The term “National Security System” means a telecommunications or information system operated by the Federal Government, the function, operation, or use of which involves intelligence activities, cryptologic activities related to national security, command and control of military forces, equipment that is an integral part of a weapon or weapons system; or, is critical to the direct fulfillment of military or intelligence missions, not including a system to be used for routine administrative and business applications (including payroll, finance, logistics, and personnel management applications).

Non-IT may include embedded IT components including software, IT hardware, and other items and services traditionally considered IT on IT requirements.

Non-IT professional services are not considered ancillary support services. Non-IT professional services are considered to be within the primary scope of the Domains.

Labor categories

OASIS+ labor categories align to the Office of Management and Budget’s Standard Occupational Classification Manual 2018, which includes compensation data maintained by the Department of Labor, Bureau of Labor Statistics. Federal agencies use the Standard Occupational Classification system, a federal statistical standard, to classify workers into occupational categories for the purpose of collecting, calculating, or disseminating data.

This text should be removed when the Views module is implemented and the buyers’ guide is no longer dependent on Text Blocks.

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Last updated: Apr 24, 2025
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