Microsoft's cloud-based identity and access service. It manages users, groups, and applications, and provides authentication (including SSO and MFA) for Azure resources and SaaS applications.
A central topic in AZ-900 and AZ-104. Critical distinction: Entra ID is a cloud directory, not a Windows Server AD. Question: which service manages identities in Azure? Answer: Microsoft Entra ID. Remember MFA and SSO as key features.
Microsoft Entra ID (Azure Active Directory) is a concept that can show up on the exam. Check the full guide to see it in context.