Struggling to close enterprise deals? Discover the 15 essential Identity Providers (IdPs) your B2B SaaS must support to meet strict security requirements.

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A ranked guide to the 15 identity providers (IdPs) B2B SaaS products must support to pass enterprise security reviews. The top five — Okta, Microsoft Entra ID, Google Workspace, Ping Identity, and OneLogin — cover roughly 80% of Fortune 2000 deals. The guide covers each IdP's market segment, SAML/OIDC/SCIM support status, and specific integration gotchas. It also addresses common mistakes that kill deals (hardcoded attribute names, missing IdP-initiated SSO, no SCIM, no metadata upload option) and advises prioritizing the roadmap based on pipeline verticals rather than raw market share.

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

What Are Identity Providers and Why Do Enterprise Buyers Care?

Why Rank IdPs by Security Questionnaire Frequency Instead of Market Share?

The 15 Identity Providers Every B2B SaaS Should Support

The 5 IdPs That 80% of Fortune 2000 Deals Require

Common Integration Mistakes That Kill Enterprise Deals