SAML vs LDAP: What's the difference?

SAML (Security Assertion Markup Language) and LDAP (Lightweight Directory Access Protocol) are both protocols used for user authentication, but they cater to different needs and environments. SAML is an open identity standard designed for exchanging authentication data across domains, facilitating single sign-on (SSO) for users accessing multiple SaaS applications without the need for separate credentials. It operates via XML and involves identity providers and service providers to ensure seamless access. LDAP, on the other hand, is used for managing access within closed networks, serving as a protocol for interacting with directory services that store and organize user information in a hierarchical structure. While LDAP focuses on authenticating users within on-premise environments, it can be integrated with protocols like Kerberos to provide an SSO-like experience within a Windows domain. Organizations often use both SAML and LDAP to bridge the gap between cloud-based and on-premise resources, using identity providers to connect LDAP directories with SAML-enabled services to enable comprehensive authentication solutions.

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