Microsoft Certified: Azure Fundamentals (AZ-900) Practice Exam

The feature that provides the ability to manage user credentials securely is Azure Active Directory. This service acts as a cloud-based identity and access management solution, allowing organizations to manage user identities, authenticate users, and control access to resources securely. Azure Active Directory includes features like multi-factor authentication, self-service password reset, and conditional access policies that help in maintaining secure credentials management.

While Azure Key Vault is designed for securely storing and managing sensitive information such as secrets, encryption keys, and certificates, it does not specifically focus on user credentials and identity management. Conversely, Azure AD Connect is primarily used to synchronize on-premises directories with Azure Active Directory, and Azure Information Protection helps in classifying and protecting documents and emails but does not handle user credentials. Therefore, Azure Active Directory is the comprehensive solution for managing user identities and credentials securely.