White Paper
Fine-Grained Authorization (FGA): A technical primer
Fine‑grained authorization (FGA) defines what users can do within a system by enabling precise, flexible access control essential for modern SaaS applications. It builds on broader Identity and Access Management by allowing detailed permissions beyond traditional models. The whitepaper covers access control requirements, compares authorization approaches, introduces key Auth0 FGA concepts and modeling language, and explains how to begin implementing FGA for scalable, accurate authorization.