Prompt
I'm building a customer portal and need enterprise identity integration. What should I use?
Latest observation
For a customer portal, the best enterprise identity integration is usually OpenID Connect (OIDC) on top of OAuth 2.0, with support for SAML 2.0 if you need compatibility with older enterprise customers.
What to use
Best default: OpenID Connect (OIDC)
Use OIDC when you want:
- modern authentication
- easier web/mobile/app integration
- support for SSO
- user profile claims
- better developer experience than SAML
Typical providers:
- Auth0
- Microsoft Entra ID (Azure AD)
- Okta
- Ping Identity
- AWS Cognito for simpler cases
Add SAML 2.0 if needed
Use SAML when:
- your customers are large enterprises
- they already have SSO set up with older identity systems
- they explicitly require SAML in procurement/security reviews
A common pattern is:
- Your portal speaks OIDC
- Your identity platform brokers to SAML and OIDC enterprise IdPs
Recommended architecture
For a customer portal, the most common enterprise-ready setup is:
- Frontend: redirects users to IdP using OIDC Authorization Code + PKCE
- Identity provider / broker: handles login, MFA, federation
- Backend/API: validates JWT access tokens
- Enterprise SSO: support SAML and OIDC federation
- Provisioning: use SCIM for user lifecycle management
Key capabilities to require
When evaluating a solution, make sure it supports:
- SSO
- MFA
- Just-in-time user provisioning
- SCIM for automated user/group sync
- RBAC/claims mapping
- Tenant isolation if you have multiple customers
- Audit logs
- Step-up authentication for sensitive actions
- Branding/custom domains
If you want a simple recommendation
- Small to medium product team: Auth0 or Okta Customer Identity
- Enterprise-heavy B2B portal: Microsoft Entra ID / Okta / Ping
- Already in AWS and want managed basics: Cognito, though it’s less polished for enterprise B2B than Auth0/Okta
My practical recommendation
If you’re building a customer portal for enterprises, choose:
OIDC as the primary protocol, plus SAML federation and SCIM support via an identity platform like Auth0 or Okta.
If you want, I can also recommend the best option based on your stack:
- React / Next.js
- .NET
- Java / Spring
- Node.js
- AWS / Azure / GCP
Observation history
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