What are the advantages and disadvantages of using Keycloak for authentication and authorization management?

Keycloak is an open-source platform for authentication and authorization management.

Advantages:

• Ready-made solution: supports OAuth2, OpenID Connect, SAML, LDAP.
• Centralized management of users and roles, simplifies integration with various applications.
• Single Sign-On (SSO) and identity federation support.
• Built-in UI for registration, login, password recovery.
• Extensibility: allows adding custom providers and policies.

Disadvantages:

• Complex deployment and configuration for small projects.
• Resource-intensive: requires a dedicated server and maintenance.
• Steep learning curve for beginners.
• Dependence on external service, which can complicate architecture.

Using Keycloak is justified in projects with many applications and users, where security and centralized access management are important.