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Identity Providers — Auth0, Clerk, Okta, and Entra ID Compared

Comparing the major identity providers: when to use each, pricing models, developer experience, and trade-offs

15 min readidentity-providers, auth0, clerk, okta, entra-id, authentication

At some point in every project, you face the build-vs-buy decision for authentication. You could roll your own auth system with bcrypt, JWTs, and email verification. Or you could use an identity provider (IdP) — a service that handles the entire authentication lifecycle for you.

The answer is almost always "use a provider." Not because building auth is impossible, but because maintaining it is a nightmare. Password reset flows, email verification, rate limiting, brute force protection, social login, MFA, compliance certifications — the list never ends, and every item on it is a potential security incident if you get it wrong.

But choosing the right provider? That's a decision that will shape your application for years. Let's compare the major options so you can prompt your AI agent

This lesson is part of the Guild Member curriculum. Plans start at $29/mo.