<ul><li>Spring Security offers various authentication mechanisms, including username/password authentication, OAuth 2.0, OpenID Connect, and more.</li><li>Basic authentication is a simple method for securing REST APIs or other services, while OAuth 2.0 and OpenID Connect provide more sophisticated authentication options.</li><li>Authorization, distinct from authentication, determines what a user is allowed to do after successful authentication. Spring Security provides fine-grained control over access to resources using techniques like role-based access control (RBAC) and access control lists (ACLs).</li><li>Method Level Security Using SpEL allows for granular control over access to individual methods based on factors like user roles, request parameters, and the current time.</li></ul>

Method Level Security Using SpEL

Discover more