Application programming interface
Use application programming interfaces (APIs) to support interoperability and openness
Application programming interfaces, or APIs, have the potential to enhance innovation. When used creatively and securely, APIs can improve the efficiency of many workflows that are important to delivering excellent digital experiences.
Related Policy
21st Century Integrated Digital Experience Act and OMB M-23-22

Customer experience: Essential knowledge
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Data.gov
Explore the home of the U.S. government’s open data, including a catalog of federal APIs.