OAuth JWT Access Tokens refers to RFC 9068, which defines a standardized profile for encoding OAuth 2.0 access tokens as JSON Web Tokens (JWTs). This specification describes how to structure access tokens using the JWT format, including a set of standard claims that are useful in access token implementations. The JWT Access Token profile enables access tokens to be self-encoded, meaning all relevant information can be embedded directly into the access token itself rather than requiring database storage. JWTs can be used as OAuth 2.0 Bearer Tokens to carry authorization information in a standardized format. This specification is part of the broader OAuth 2.0 framework and relates to several other OAuth standards including Bearer Token Usage (RFC 6750), Token Introspection (RFC 7662), Token Revocation (RFC 7009), and the core JSON Web Token specification (RFC 7519). The standard provides a consistent approach for implementing self-contained access tokens that can be validated without requiring calls to a central authorization server for every validation request. This approach can improve performance and scalability in distributed systems while maintaining security through cryptographic signatures.