Connecting to Company Azure AD
Step1: Have your company on-premises Active Directory (AD) domain integrated with the Azure Active directory. How to get on-premises AD sync with Azure AD can be found in below links.
Step2: Log on to your Azure DevOps organization with the organizations owner Microsoft account. Go to Organization settings –> Users tab and add the company domain user to the users.
Step5: While logged in from the Microsoft account which is the Azure DevOps organization owner, change the ownership of the organization to the company domain user, in the organization settings overview page.
Disconnecting from Company Azure AD
If you wish to disconnect the Azure DevOps organization from the Azure AD of the company you can do so by clicking on Disconnect Directory in the Azure Active Directory tab of the Organizations setting page. The user log on must be the organization owner to perform disconnection.