In the evolving landscape of enterprise identity management, secure access to systems and applications remains a mission-critical challenge. The Lightweight Directory Access Protocol (LDAP) has long served as a foundational standard for managing user identities, authentication, and directory services. While new identity frameworks and cloud solutions gain attention, LDAP continues to play a central role in integrating legacy systems, supporting hybrid IT architectures, and enabling scalable access control across diverse environments.
This paper explores LDAP’s fundamentals, architecture, and common use cases. It also examines integration in modern IAM ecosystems, challenges and limitations, and the protocol’s future trajectory.