Best CIAM for B2B SaaS

B2B SaaS has a CIAM problem that consumer apps do not: your user belongs to an organization, and that organization has its own identity rules. Picking a consumer-first platform here leads to painful workarounds.

The B2B requirements that change the shortlist

  • Organizations and multi-tenancy: users belong to a company, and a person may belong to several. The data model has to be tenant-first, not user-first.
  • Per-tenant SSO: each customer connects their own identity provider. One customer uses Okta, another Entra, another Google Workspace. See SSO for customer and B2B apps.
  • SCIM provisioning: enterprise customers expect automatic account lifecycle, including deprovisioning on offboarding.
  • Roles and permissions per tenant: an admin in one org is a member in another.
  • Self-serve SSO setup: if every SSO connection needs your engineers, enterprise onboarding does not scale.

Where the money leaks

Two traps. First, the SSO tax: platforms that gate enterprise SSO to a top tier turn every enterprise deal into a margin question. Second, MAU pricing on B2B can be misaligned, because seats matter more than monthly logins. Read the pricing guide and model it against deal size.

How to evaluate

  1. Confirm a real organizations primitive, not a tag bolted onto users.
  2. Test multi-tenant SSO with two different providers in the trial.
  3. Confirm SCIM deprovisioning removes access immediately.
  4. Check whether SSO and SCIM are tier-gated, and what that tier costs at your deal volume.
  5. Confirm customers can self-configure SSO.

Dev-first platforms built for B2B tend to fit better here than consumer-scale suites. Use the vendor matcher, set segment to B2B SaaS, and require SSO and SCIM.