Azure Active Directory
Azure Active Directory is a comprehensive, highly available identity and access management cloud solution that combines core directory services, advanced identity governance and application access management. Azure Active Directory also offers a rich, standards-based platform that enables developers to deliver access control to their applications, based on centralised policy and rules.
Plans
Azure Active Directory Free
Provides user and group management, on-premises directory synchronization, basic reports, and single sign-on across Azure, Office 365, and many popular SaaS apps.
Azure Active Directory Basic
In addition to the Free features, Basic also provides cloud-centric app access, group-based access management, self-service password reset for cloud apps, and Azure AD Application Proxy, which lets you publish on-premises web apps using Azure AD.
Azure Active Directory Premium P1
In addition to the Free and Basic features, P1 also lets your hybrid users access both on-premises and cloud resources. It also supports advanced administration, such as dynamic groups, self-service group management, Microsoft Identity Manager (an on-premises identity and access management suite) and cloud write-back capabilities, which allow self-service password reset for your on-premises users.
Azure Active Directory Premium P2
In addition to the Free, Basic, and P1 features, P2 also offers Azure Active Directory Identity Protection to help provide risk-based conditional access to your apps and critical company data and Privileged Identity Management to help discover, restrict, and monitor administrators and their access to resources and to provide just-in-time access when needed.