What you'll learn

Many teams still rely on custom login forms and scattered role checks, which do not scale in modern microservice- and API-driven systems. In this course, Authentication and Authorization in Spring Boot 4 Using OAuth2, you'll learn to secure Spring Boot applications using modern Spring Security, OAuth2, and OpenID Connect. First, you'll explore how to configure Spring Security in a new Spring Boot 4 project and set up OAuth2 login with an external identity provider. Next, you'll discover how to protect RESTful APIs as OAuth2 resource servers using JWT tokens, scopes, and fine-grained authorization rules with the AuthorizationManager API and method-level annotations. Finally, you'll learn how to integrate the Spring Security OAuth2 Authorization Server module, enable stateless session management, and test your authentication and authorization workflows end to end. When you're finished with this course, you'll have the skills and knowledge of Spring Boot 4 security needed to secure your web apps and microservices with OAuth2 and OpenID Connect.