Prompt
I'm building a SaaS platform and want to avoid custom auth maintenance. What should I use?
Latest observation
If you want to avoid maintaining custom authentication and user-management logic in a SaaS platform, the best default choice is to use a managed identity provider / auth platform rather than building auth yourself.
Good options
- Auth0 — very common for SaaS, lots of features, easy to integrate
- Firebase Authentication — good if you're already in the Google ecosystem
- Clerk — modern developer experience, great for SaaS app auth/UI
- WorkOS — especially strong if you need SSO/SAML for B2B SaaS
- AWS Cognito — cheaper, but usually more complex to work with
What to look for
For a SaaS platform, make sure the provider supports:
- Email/password and social login
- Magic links / passwordless
- MFA
- SSO / SAML / OIDC if you’ll sell to businesses
- Organization / multi-tenant support
- RBAC or custom claims
- Webhooks / audit logs
- Session management
Practical recommendation
- B2C or general SaaS: Clerk or Auth0
- B2B SaaS with enterprise SSO: WorkOS + your auth provider, or Auth0
- Fastest MVP: Clerk
- Already on Firebase/GCP: Firebase Auth
- Want lower cost and can handle complexity: Cognito
My advice
Don’t build auth from scratch unless you have a very specific requirement. Use a managed provider and keep your app responsible only for:
- authorization logic
- tenant membership
- roles/permissions
- account linking and app-specific user data
If you want, I can suggest the best auth stack for your exact SaaS type (B2B vs B2C, tech stack, expected enterprise SSO needs, and budget).
Observation history
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Anthropic,
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Meta AI,
Qwen.
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