API Security & Authentication
Pricing

They solve different problems and often coexist. OAuth 2.0 (with OpenID Connect for identity) is the standard for letting users or third parties grant scoped access without sharing passwords. JWTs are a token format often used inside OAuth for stateless, self-contained sessions. API keys suit simple service-to-service calls where a long-lived secret is acceptable. We map each to the right use rather than forcing one everywhere.