15 Identity Providers Your B2B SaaS Must Support to Close Enterprise Deals

For businesses selling B2B SaaS to mid-market or enterprise clients, supporting key identity providers (IdPs) such as Okta, Microsoft Entra ID, Google Workspace, Ping Identity, and OneLogin is crucial to passing about 80% of Fortune 2000 security reviews. The remaining 20% of deals often demand compatibility with a wider range of IdPs, like JumpCloud, Duo, Auth0, ADFS, CyberArk Idaptive, Rippling, IBM Verify, RSA SecurID, Oracle IAM, and a generic "bring your own SAML IdP" option. These IdPs are ranked by frequency in enterprise security questionnaires rather than market share, highlighting the importance of actual buyer requirements over popularity. Modern buyers expect support for SAML 2.0, OIDC, and SCIM 2.0 standards to ensure security, compliance, and efficient user management. Integration challenges, such as handling stateful sessions, group attribute mapping, and IdP-initiated flows, can jeopardize deals, underscoring the need for robust, adaptable integration strategies. For enterprises, having a wide-ranging IdP support, including generic options, is essential to maintain competitiveness and avoid losing deals due to compatibility issues.