Entra AD, also known as Azure AD (Azure Active Directory), is Microsoft’s cloud-based identity and access management service. It provides a set of capabilities to manage user identities and access to resources in the Microsoft Azure cloud environment. Azure AD allows organizations to centrally manage user accounts, control access to applications and resources, and enable single sign-on for users across different cloud services and on-premises applications. It also provides features such as multi-factor authentication, self-service password reset, and integration with other Microsoft services like Office 365 and Azure.