Defense Acronyms Glossary: DoD, IC, and Federal IT Terms
Defense Acronyms Glossary: DoD, IC, and Federal IT Terms
The defense and intelligence community runs on acronyms. Whether you are a program manager navigating a new contract, a software engineer joining a classified program, or a business development professional pursuing federal opportunities, this glossary provides quick, authoritative definitions for the terms you will encounter daily. Bookmark this page — it is your go-to reference for Department of War, Intelligence Community, and federal IT terminology.
The formal process of evaluating an information system’s security controls and authorizing it to operate. Replaces the older Certification & Accreditation (C&A) terminology.
AO
Authorizing Official
The senior official who formally assumes responsibility for operating an information system at an acceptable level of risk. The AO grants or denies the system’s ATO.
API
Application Programming Interface
A set of protocols and tools for building software applications. APIs define how different software components should interact, enabling systems integration across defense platforms.
ATO
Authority to Operate
Formal authorization granted by an Authorizing Official that allows an IT system to operate within a defined environment. Required before any Department of War system goes live. Zapata’s cybersecurity team supports the full ATO lifecycle.
B
Acronym
Full Name
Definition
BPA
Blanket Purchase Agreement
A simplified acquisition method used by federal agencies to fill recurring needs for supplies or services. BPAs reduce administrative costs by establishing charge accounts with qualified sources.
C
Acronym
Full Name
Definition
C2
Command and Control
The exercise of authority and direction by a commander over assigned forces. Modern C2 systems are software-defined platforms that enable rapid decision-making across domains.
C4ISR
Command, Control, Communications, Computers, Intelligence, Surveillance, and Reconnaissance
An integrated framework describing the full spectrum of military information systems. Zapata Technology delivers C4ISR solutions that connect sensors to decision-makers.
CAGE
Commercial and Government Entity Code
A five-character alphanumeric identifier assigned to entities doing business with the federal government. Required for all defense contractors registered in SAM.gov.
CAC
Common Access Card
A smart card issued by the Department of War for physical access to buildings and logical access to computer networks and systems. Serves as the standard ID for military personnel, civilians, and contractors.
CDAO
Chief Digital and Artificial Intelligence Officer
The Department of War’s senior official responsible for strengthening and integrating data, AI, and digital solutions. Established in 2022 by merging JAIC and other data offices.
CDM
Continuous Diagnostics and Mitigation
A DHS cybersecurity program providing federal agencies with tools and services to identify and mitigate cybersecurity risks on an ongoing basis.
CI/CD
Continuous Integration / Continuous Delivery
A software development practice where code changes are automatically built, tested, and prepared for release. Essential for DevSecOps pipelines in defense environments.
CISA
Cybersecurity and Infrastructure Security Agency
The federal agency responsible for protecting the nation’s critical infrastructure from cyber and physical threats. Part of the Department of Homeland Security.
CMMC
Cybersecurity Maturity Model Certification
A Department of War framework that measures a defense contractor’s cybersecurity practices across multiple maturity levels. Required for handling CUI on defense contracts. Learn about Zapata’s CMMC services.
CONOP
Concept of Operations
A document describing how a system or capability will be employed in an operational environment. Bridges the gap between requirements and technical design.
CONUS
Continental United States
The 48 contiguous states and the District of Columbia. Used in defense contracting to distinguish domestic work locations from overseas (OCONUS) assignments.
COTS
Commercial Off-the-Shelf
Commercially available products that can be purchased and used without custom modification. Department of War policy encourages COTS solutions when they meet mission requirements.
CUI
Controlled Unclassified Information
Government-created or -owned information that requires safeguarding but does not meet the threshold for classified. CMMC Level 2 specifically addresses CUI protection in the defense industrial base.
CVE
Common Vulnerabilities and Exposures
A publicly available list of known cybersecurity vulnerabilities, each assigned a unique identifier. Defense systems must be continuously monitored and patched against known CVEs.
D
Acronym
Full Name
Definition
DCGS-A
Distributed Common Ground System – Army
The Army’s primary intelligence processing, exploitation, and dissemination system. DCGS-A integrates multi-source intelligence data into a unified platform for analysts. Zapata supports Army IT programs including intelligence systems.
DFARS
Defense Federal Acquisition Regulation Supplement
Regulations supplementing the FAR that are specific to Department of War acquisitions. DFARS clause 252.204-7012 establishes cybersecurity requirements for defense contractors handling CUI.
DIB
Defense Industrial Base
The worldwide industrial complex that enables research, development, and production of military weapons systems and components. Includes over 300,000 companies.
DISA
Defense Information Systems Agency
The Department of War agency that provides IT and communications support to the President, military, and federal agencies. DISA manages the SIPR and NIPR networks and develops STIGs.
DUNS
Data Universal Numbering System
A unique nine-digit identifier for businesses, previously required for federal contracting. Now largely replaced by the UEI (Unique Entity Identifier) in SAM.gov.
E
Acronym
Full Name
Definition
EAR
Export Administration Regulations
Regulations administered by the Bureau of Industry and Security governing the export of dual-use items — commercial items that could have military applications.
EO
Executive Order
A directive issued by the President that manages operations of the federal government. EO 14028 (2021) significantly expanded federal cybersecurity requirements including zero trust mandates.
ESB
Enterprise Service Bus
A middleware architecture pattern used to integrate disparate applications and services. Common in legacy Department of War systems being modernized through microservices architectures.
F
Acronym
Full Name
Definition
FAR
Federal Acquisition Regulation
The primary set of rules governing all federal government acquisitions. Contains uniform policies and procedures for acquisition by executive agencies. See our Federal Contracting FAQ for how FAR applies to small businesses.
FedRAMP
Federal Risk and Authorization Management Program
A government-wide program that provides a standardized approach to security assessment and authorization for cloud products and services used by federal agencies.
FIPS
Federal Information Processing Standards
Standards developed by NIST for use by federal agencies. FIPS 140-2 (and its successor 140-3) is the cryptographic module validation standard required for Department of War systems.
FISMA
Federal Information Security Modernization Act
Federal law requiring each agency to develop, implement, and maintain an information security program. Mandates annual assessments and reporting on cybersecurity posture.
G
Acronym
Full Name
Definition
GFE
Government-Furnished Equipment
Equipment owned by the government and provided to contractors for use during contract performance. Contractors must track, maintain, and return GFE per contract terms.
GFI
Government-Furnished Information
Data, documents, or information provided by the government to a contractor for use in performing a contract. Handling requirements vary based on classification and CUI markings.
GOTS
Government Off-the-Shelf
Software or technology developed by the government (or by a contractor at government direction) and owned by the government. Contrasts with COTS.
GWAC
Government-Wide Acquisition Contract
A pre-competed, multiple-award contract vehicle available for use by all federal agencies. Streamlines procurement of IT solutions. Examples include STARS III and Alliant 2.
H
Acronym
Full Name
Definition
HUMINT
Human Intelligence
Intelligence gathered through interpersonal contact, as opposed to signals or imagery intelligence. HUMINT operations require specialized systems for source management and reporting.
I
Acronym
Full Name
Definition
IDIQ
Indefinite Delivery / Indefinite Quantity
A contract type that provides for an indefinite quantity of supplies or services during a fixed period. Task orders are issued against the IDIQ as needs arise. View Zapata’s contract vehicles.
IL4
Impact Level 4
A DISA cloud security classification for CUI and Non-Critical Mission Information. IL4 environments require enhanced security controls beyond standard FedRAMP Moderate.
IL5
Impact Level 5
A DISA cloud security classification for higher-sensitivity CUI and unclassified National Security Systems. IL5 cloud environments must be physically separated and operated within the United States.
IMINT
Imagery Intelligence
Intelligence derived from the exploitation of imagery collected by visual photography, radar sensors, or electro-optical sensors. Increasingly processed using AI/ML algorithms.
INSCOM
U.S. Army Intelligence and Security Command
The Army’s primary intelligence organization, headquartered at Fort Gordon, Georgia. INSCOM conducts intelligence, security, and information operations for military commanders and national decision-makers.
ISSO
Information System Security Officer
The individual responsible for ensuring the security posture of an information system is maintained. The ISSO works under the direction of the ISSM and implements security policies daily.
ISR
Intelligence, Surveillance, and Reconnaissance
An integrated intelligence and operations function that synchronizes and integrates the planning, collection, processing, and dissemination of information to support military decisions.
ITAR
International Traffic in Arms Regulations
U.S. regulations controlling the export and import of defense-related articles and services. Companies handling ITAR-controlled data must maintain strict access controls and compliance programs.
J
Acronym
Full Name
Definition
JADC2
Joint All-Domain Command and Control
The Department of War’s concept for connecting sensors from all military services into a single network. JADC2 enables faster decision-making by sharing data across air, land, sea, space, and cyber domains.
JAIC
Joint Artificial Intelligence Center
Former Department of War organization focused on accelerating AI adoption. Merged into the CDAO in 2022. Pioneered Project Maven and other defense AI initiatives.
JITC
Joint Interoperability Test Command
A DISA organization that tests and certifies IT systems for interoperability and information assurance. JITC certification is required before systems can operate on Department of War networks.
K
Acronym
Full Name
Definition
KPP
Key Performance Parameter
A critical performance attribute that a system must achieve to be considered operationally effective. KPPs are validated through developmental and operational testing.
L
Acronym
Full Name
Definition
LPTA
Lowest Price Technically Acceptable
A source selection method where the award goes to the lowest-priced proposal that meets the minimum technical requirements. Commonly used for commodity IT services.
M
Acronym
Full Name
Definition
MA-IDIQ
Multiple Award – Indefinite Delivery / Indefinite Quantity
An IDIQ contract awarded to multiple vendors, who then compete for individual task orders. Provides the government flexibility while maintaining competition. OASIS+ is an example of a MA-IDIQ.
MASINT
Measurement and Signature Intelligence
Intelligence obtained by quantitative and qualitative analysis of physical attributes of targets and events. Includes radar, nuclear, chemical, biological, and acoustic intelligence.
MCTSSA
Marine Corps Tactical Systems Support Activity
A Marine Corps organization that provides lifecycle support for tactical C4ISR systems. Responsible for testing, evaluation, and fielding of Marine Corps IT systems.
MDAP
Major Defense Acquisition Program
A Department of War acquisition program with an estimated total expenditure exceeding specific dollar thresholds. Subject to oversight by the Milestone Decision Authority.
MLOps
Machine Learning Operations
The practice of deploying and maintaining machine learning models in production. In defense, MLOps must comply with security requirements and operate in disconnected or classified environments. Zapata’s AI/ML team specializes in defense MLOps.
N
Acronym
Full Name
Definition
NAICS
North American Industry Classification System
A standard classification system used to categorize businesses by industry. Defense IT contractors typically operate under codes like 541512 (Computer Systems Design) and 541511 (Custom Programming). See Zapata’s NAICS codes.
NIPR
Non-classified Internet Protocol Router Network
The Department of War’s network for transmitting unclassified but sensitive information. Commonly referred to as NIPRNet. Complements the classified SIPRNet.
NIST
National Institute of Standards and Technology
A federal agency that develops cybersecurity standards and guidelines. NIST SP 800-171 defines the security requirements for protecting CUI, forming the basis of CMMC.
NLP
Natural Language Processing
A branch of AI focused on enabling computers to understand, interpret, and generate human language. Used in defense for automated document exploitation, translation, and intelligence analysis.
NSA
National Security Agency
An intelligence agency responsible for signals intelligence (SIGINT) and information assurance. Headquartered at Fort Meade, Maryland, with a major presence at Fort Gordon, Georgia.
O
Acronym
Full Name
Definition
OASIS+
One Acquisition Solution for Integrated Services Plus
Any location outside the 48 contiguous U.S. states and the District of Columbia. OCONUS assignments often carry additional pay differentials and security requirements.
OTA
Other Transaction Authority
A contracting mechanism that allows the Department of War to engage with non-traditional defense contractors outside standard FAR-based procurement. Enables rapid prototyping and innovation.
P
Acronym
Full Name
Definition
PEO
Program Executive Office
An Army or Department of War organization responsible for managing a portfolio of related acquisition programs. PEO IEW&S manages intelligence and electronic warfare systems.
PIV
Personal Identity Verification
A smart card credential used for physical and logical access to federal systems. Based on FIPS 201 standards. Similar to the CAC but used across civilian agencies.
PMO
Program Management Office
The organizational entity responsible for the management and oversight of a specific program or project. In defense, the PMO coordinates between the government customer and contractor teams.
POA&M
Plan of Action and Milestones
A document that identifies tasks needing to be accomplished to resolve information security weaknesses. Required as part of the RMF process and CMMC compliance. Zapata’s cybersecurity team helps manage POA&Ms.
PWS
Performance Work Statement
A statement of work for performance-based acquisitions that describes the required results in clear, measurable terms rather than specifying how the work should be performed.
R
Acronym
Full Name
Definition
RFI
Request for Information
A solicitation document used by the government to gather information from industry before issuing a formal RFP. RFIs help shape acquisition strategies and are not binding.
RFP
Request for Proposal
A formal solicitation document issued by the government requesting proposals from contractors for a specific requirement. Includes evaluation criteria, terms, and submission instructions.
RMF
Risk Management Framework
The structured process used by the Department of War to manage information security risk. Defined in NIST SP 800-37, RMF replaced DIACAP and provides a six-step lifecycle for system authorization. Zapata supports RMF assessments.
S
Acronym
Full Name
Definition
SAM
System for Award Management
The official U.S. government system where entities must register to do business with the federal government. Registration in SAM.gov is required before receiving any federal contract or grant.
SAP
Special Access Program
A highly classified program with additional access controls beyond standard collateral classification. SAPs protect the nation’s most sensitive technologies and operations.
SBIR
Small Business Innovation Research
A federal program that encourages small businesses to engage in R&D with commercialization potential. SBIR contracts provide phased funding for technology development.
SCI
Sensitive Compartmented Information
Classified information concerning or derived from intelligence sources, methods, or analytical processes. Requires special handling within accredited Sensitive Compartmented Information Facilities (SCIFs).
SCIF
Sensitive Compartmented Information Facility
An accredited room or building where SCI can be stored, discussed, and processed. SCIFs have strict physical security requirements including soundproofing and access controls.
SDVOSB
Service-Disabled Veteran-Owned Small Business
A small business owned and controlled by one or more service-disabled veterans. SDVOSB status provides access to sole-source and set-aside contracting opportunities.
SIGINT
Signals Intelligence
Intelligence gathered from the interception of signals, including communications between people (COMINT) and electronic emissions (ELINT). The NSA is the primary U.S. SIGINT agency.
SIPR
Secret Internet Protocol Router Network
The Department of War’s network for transmitting classified (Secret-level) information. SIPRNet is physically isolated from the internet and NIPRNet.
SOW
Statement of Work
A document that defines the scope, deliverables, timelines, and requirements for a contract. The SOW is the foundation of the contractual agreement between the government and contractor.
STARS III
8(a) Streamlined Technology Acquisition Resource for Services III
A GSA GWAC exclusively for 8(a) certified small businesses. Provides access to IT services and solutions across federal agencies. Zapata holds a STARS III contract.
STIG
Security Technical Implementation Guide
Configuration standards developed by DISA for securing Department of War information systems. STIGs provide detailed hardening guidance for operating systems, applications, and network devices.
T
Acronym
Full Name
Definition
TO
Task Order
An order issued against an IDIQ or other indefinite-delivery contract for specific work. Task orders define the scope, schedule, deliverables, and funding for individual efforts.
TS/SCI
Top Secret / Sensitive Compartmented Information
The highest standard security clearance level combined with SCI access. Required for personnel who need access to the most sensitive classified intelligence information and programs.
U
Acronym
Full Name
Definition
UEI
Unique Entity Identifier
A 12-character alphanumeric ID assigned by SAM.gov to entities registering to do business with the federal government. Replaced the DUNS number in April 2022.
USASOC
U.S. Army Special Operations Command
The Army component of U.S. Special Operations Command. Headquartered at Fort Bragg (now Fort Liberty), North Carolina. Oversees Army Special Forces, Rangers, and other special operations units.
USCYBERCOM
U.S. Cyber Command
A unified combatant command responsible for cyberspace operations. Dual-hatted with NSA and headquartered at Fort Gordon, Georgia.
V
Acronym
Full Name
Definition
VOSB
Veteran-Owned Small Business
A small business owned and controlled by one or more veterans. VOSB certification provides access to set-aside contracts and demonstrates commitment to supporting veteran entrepreneurs. Zapata Technology is a certified VOSB.
W
Acronym
Full Name
Definition
WBS
Work Breakdown Structure
A hierarchical decomposition of the total scope of work to be carried out by the project team. Standard WBS templates exist for Department of War acquisition programs (MIL-STD-881).
Z
Acronym
Full Name
Definition
Zero Trust
Zero Trust Architecture
A security model that requires strict identity verification for every person and device trying to access resources, regardless of whether they are inside or outside the network perimeter. Mandated across Department of War by 2027. Zapata implements Zero Trust frameworks for defense networks.
ZTA
Zero Trust Architecture
The technical implementation of Zero Trust principles, as defined in NIST SP 800-207. Includes micro-segmentation, continuous authentication, and least-privilege access controls.
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