Azure AD free supports common features such as these:

• Up to 5,00,000 directory objects, which could be users, devices, applications, or groups
• User/group management (add/update/delete), user-based provisioning, and device registration
• SSO for up to ten applications per user
• Self-service password changes for cloud users
• Connect and sync with on-premises AD DS
• Up to three basic security and usage reports