Keycloak: Red Hat's Open Source IAM Platform Centralises App Authentication

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Keycloak is an open source Identity and Access Management solution maintained by Red Hat that centralises authentication and authorisation for modern applications. Instead of each application handling its own login logic, they delegate that responsibility to Keycloak, which supports standards including OpenID Connect, OAuth 2.0, and SAML 2.0. The platform offers features such as Single Sign-On, social login via identity brokering, user federation with LDAP and Active Directory, and role-based access control. Developers can quickly trial Keycloak locally using a Docker command, though production deployments require a dedicated database, HTTPS, and cluster configuration for reliability. Key concepts include realms for isolating user spaces, clients representing connected applications, and roles or groups for managing permissions at scale.

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