Bigger organizations can now securely deploy the Azure HDInsight service. You can create an HDInsight cluster with Enterprise Security Package (ESP) that's joined to an Azure Active Directory Domain Services (Azure AD DS) managed domain. You can then configure a list of employees from the enterprise who can authenticate through Azure AD DS to log on to the HDInsight cluster.
This GA release includes a greatly simplified cluster setup experience that takes advantage of integration between Azure AD DS and the HDInsight service.
For more information, see the blog post.