How to support any SAML or OIDC identity provider with only one integration

Supporting multiple identity providers (IdPs) for single sign-on (SSO) in enterprise environments is more complex than simply implementing a standard like SAML, as different IdPs such as Azure AD, Okta, and Ping have unique implementations and quirks that require intricate handling. Initial SSO integrations often lead to unforeseen challenges because assumptions made for one IdP may not hold true for others, leading to breakdowns in authentication flows. The ongoing maintenance of these integrations is a significant burden due to varying certificate rotations, metadata handling, and error diagnostics, turning support teams into de facto identity management teams. WorkOS addresses these challenges by providing a unified integration that abstracts the complexities of different IdPs, offering a consistent interface for authentication, normalizing attributes, and centralizing error handling. This abstraction not only simplifies the integration process but also ensures scalability and reliability for enterprises engaging with numerous IdPs, positioning identity management as a critical platform-level concern rather than a mere feature.