Chapter 5 focuses on the critical domain of Identity and Access Management (IAM), a cornerstone of modern cybersecurity practices. In today's digital landscape, ensuring that only authorized individuals have access to the right resources at the right time is essential for maintaining security and reducing the risk of unauthorized access. This chapter will introduce you to the key concepts, tools, and techniques necessary to effectively manage identities, control access, and enforce security policies across systems and networks. From understanding authentication methods to implementing robust access control mechanisms, this chapter is designed to provide a comprehensive foundation in IAM.