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NIEM 5.0 Major Release

This release underscores NIEM’s value as a force multiplier in enabling secure, scalable enterprise-level data interoperability across diverse, complex systems & organizations. 

Strategic Initiatives

NIEM evolves with community needs and technology trends. Find out how we are pursuing several Strategic Initiatives to simplify use, embrace emerging technologies, and welcome new communities.

What is NIEM?

NIEM is a common vocabulary that enables efficient information exchange across diverse public and private organizations. NIEM can save time and money by providing consistent, reusable data terms and definitions, and repeatable processes.

Learn More

Download Current Release

Check out the latest version and release history on our Github.

Explore Training

Providing our developer community with resources to help use NIEM.

View Success Stories

Participating organizations & agencies leveraging the power of NIEM.

Browse Tool Catalog

An inventory of tools to support developers and implementers alike.

Latest News

  • NIEM Announces Release of Conformance and IEPD Specifications and JSON Beta1 Release for Review

    The National Information Exchange Model’s (NIEM) Management Office announces the final release of two specifications: NIEM Conformance Specification, v5.0 The Conformance Specification details NIEM general conformance guidance, principles, and rules. NIEM Information Exchange Package Documentation (IEPD) Specification, v5.0 The specification provides normative rules and non-normative guidance for building NIEM information exchange messages. NIEM JSON Specification 5.0 beta1 is available for...

  • NIEM Launches New Website

    The National Information Exchange Model’s (NIEM) website,, has launched with an entirely new look and feel. The site incorporates leading edge practices in web design and content management using open source user interface components. adheres to the U.S. federal government’s websites visual style guidance and community best practices (i.e., Worldwide Web Accessibility Standards, U.S. Web Design System (USWDS)...

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