Access Control and Identity Management, Fourth Edition, offers focused, in-depth coverage of identity and access management for cybersecurity courses in higher education and professional training programs. Unlike survey texts that devote only a few chapters to access control, this resource is dedicated entirely to IAM, giving instructors complete coverage in one place and students a clear, structured path from foundational concepts to applied practice. Accreditation and curriculum alignment are supported through structured coverage of core IAM competencies and learning outcomes mapped to leading workforce and academic standards, including NICE, CAE-CD, and CSEC. Building on the strong foundation of previous editions, the Fourth Edition emphasizes identity and security management within modern IT environments. Coverage spans authentication, authorization, and public key infrastructure, with attention to implementation, management, testing, and operational considerations. Technical concepts are reinforced with governance, compliance, and risk context to reflect how IAM functions in real-world organizations.