Microsoft Entra ID
Microsoft Entra ID (formerly Azure Active Directory) is a cloud-based identity and access management service that provides authentication, authorization, and identity governance for applications and resources. It enables single sign-on (SSO), multi-factor authentication (MFA), and conditional access policies to secure access to cloud and on-premises applications. It serves as the identity backbone for Microsoft 365, Azure, and thousands of third-party SaaS applications.
Developers should learn Microsoft Entra ID when building applications that require secure user authentication, especially in enterprise environments or when integrating with Microsoft ecosystems like Azure or Microsoft 365. It is essential for implementing identity management in cloud-native applications, enabling features like OAuth 2.0 and OpenID Connect for modern authentication flows, and ensuring compliance with security standards through centralized access controls.