Prompt
I'm building a SaaS app and need low-friction SSO setup for customers. What should I use?
Latest observation
For a SaaS app, the usual low-friction path is:
Best default: OIDC (OpenID Connect) with enterprise IdP support
Support login via the major identity providers your customers already use:
- Microsoft Entra ID / Azure AD
- Google Workspace
- Okta
- OneLogin
- Ping / Auth0 / JumpCloud if needed
Why OIDC?
- Easier to implement than raw SAML
- Modern, JSON/HTTP-based, developer-friendly
- Works well for SaaS customer login
- Better fit for API-first applications
Also support SAML 2.0 if you sell to enterprise
Many enterprise customers still require SAML, even if they’d prefer OIDC. If you want broad compatibility, offer both:
- OIDC for simplicity
- SAML for enterprise procurement/security requirements
For the lowest-friction implementation: use an identity platform
Instead of rolling your own SSO logic, use a provider that abstracts both OIDC and SAML:
- Auth0
- WorkOS (very popular for B2B SaaS SSO)
- Clerk (good for auth, less enterprise-SSO focused than WorkOS)
- Azure AD B2C (more Microsoft-centric)
- FusionAuth / Keycloak if you want more control/self-hosting
If your app is B2B SaaS, my top recommendation:
Use WorkOS + OIDC/SAML
- Fastest path to enterprise SSO
- Easier customer onboarding
- Handles directory sync / SCIM as well
- Good developer experience for SaaS teams
If you want the simplest rollout plan
- Build your app with email/password + magic link as the baseline
- Add OIDC social/enterprise login
- Add SAML SSO for enterprise customers
- Add SCIM later for automatic user provisioning/deprovisioning
Rule of thumb
- Startup / SMB SaaS: OIDC first
- B2B enterprise SaaS: OIDC + SAML via WorkOS/Auth0
- Need directory provisioning: add SCIM
If you want, I can recommend a specific stack based on your app type and language (e.g. React/Next.js, Node, Python, Rails, etc.).
Observation history
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