Azure Active Directory (AD) has been handling our identity requests since 2013, and is one of the most widely used cloud-based identity and access management services, with millions of users and thousands of organizations using it to manage access to their cloud-based applications and services. Azure AD has processed billions of authentications and millions of transactions daily, demonstrating its scalability and reliability.
And yet, there is a lot of confusion with Azure AD.
With everything moving to the cloud, Microsoft needed a way to authorize and authenticate users to cloud resources, including their own offerings like Microsoft 365 (Office 365). Microsoft made Azure AD, which is both an authorization and authentication provider.