Hi @Harrison, Stewart - Microsoft Identify Manager is fully supported and Microsoft recommends MIM to address this need right now. We are working on new functionality in Azure AD to enable customers to bring in data from additional sources beyond Workday and SuccessFactors and you should look out for updates in our “What’s New” documentation for more information later this year.
Keep a look out for announcements during Microsoft Ignite as well, we'll be discussion this scenario there!