
Adding a Custom Domain to Microsoft Entra ID (formerly Azure AD)
In this post, you will learn how to add custom domain name in Entra ID (formerly Azure AD or Azure Active Directory). We will set as the primary ID for your tenant.
Note that before you can add a custom domain name, create your domain name with a domain registrar. This is a very basic step and most people are aware of this. By default the person who creates the tenant automatically becomes the Global administrator for that tenant. Only the Global administrator can add additional administrators to the tenant.
The steps to add custom domain name to Azure active directory is very simple. However one has to understand why you need to add custom domain name in Azure AD. Assume that your organization signs up for Intune, a Microsoft cloud-based service. You get domain name hosted in Azure Active Directory (AD) that looks like domainname.onmicrosoft.com.
Every Azure AD directory comes with an initial domain name in the form of domainname.onmicrosoft.com. So what if you don’t want to use the default domain and add custom domain ?. Yes, you can add custom domain name in Azure AD.