"Active Directory" / "Active Directory Domain Service" / "Active Directory Application Mode" / "Active Directory Lightweight Directory Services" / "Azure Active Directory" / "Entra Id" / "Active Directory Federation Services" / "Active Directory Certificate Services" / "Active Directory Rights Management Services"

Ugh... and don't even get my started about the pronunciation of "Azure" (or the fact that, somehow, they took a project code-named "Red Dog" and named it after the color blue. Then there's the JEt Red and Jet Blue database engines, one of which was used by Active Directory...)

You're forgetting Azure Active Directory Domain Services, which is presumably now named Entra AD Domain Services which is different from Azure AD/Entra AD because it's a managed domain controller in Azure...

Don't forget "Azure Active Directory B2C".