OAuth2 SSO Resource Server Explained | Spring Boot Resource Server + Client (2025)
In this tutorial, we build an oauth2 sso resource server using Spring Boot and Spring Security with the latest libraries (2025).
You’ll learn how an oauth2 sso resource server communicates with an OAuth2 client, validates access tokens, and securely shares authentication information.
This video explains how the oauth2 sso resource server and OAuth2 client exchange JWT tokens and protected user data in a real-world setup.
By the end, you’ll fully understand how to implement an OAuth2 SSO Resource Server in Spring Boot with proper token validation and secure communication.
🔥 WHAT YOU’LL LEARN
What is an OAuth2 Resource Server
OAuth2 SSO client vs resource server
How access tokens are exchanged
JWT validation in resource server
Securing APIs using OAuth2
Client–Resource server communication
Real-world OAuth2 SSO flow
🛠 TECHNOLOGIES USED
Spring Boot • Spring Security • OAuth2 Resource Server • OAuth2 Client • JWT • Java 21 • Maven
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