From Zero to Hero with REST and OAuth2 #jjug

The document discusses authorization using OAuth2 and securing REST APIs. It begins with an introduction to OAuth2 terminology and flow, including the authorization code grant and resource owner password credentials grant types. It then covers using JSON Web Tokens (JWTs) as access tokens, explaining that JWTs can be verified at startup without calling the authorization server for each request, unlike plain access tokens. The document concludes with links to code samples for implementing OAuth2 in Spring.