All three languages support modern authentication protocols like OAuth2 and OpenID Connect but differ in implementation complexity and available tooling. Node.js, via Passport.js, offers straightforward plug-and-play strategies. Python has libraries like Authlib and social-auth-app-django to simplify these protocols’ integration. Java’s Spring Security OAuth module provides enterprise-grade support with detailed configuration options, making it ideal for large-scale applications requiring fine-grained security controls.
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