Typically you manage your Microsoft Office installations by using group policies(-only) and options you have before you deploy the software to the computers within your organisation. However, now cloud-based policies for Office 365 ProPlus are in preview (Feb. 2019). These new option helps you to centrally mange Office 365 ProPlus deployments either for domain-joined or non-domain joined (but MDM managed) devices.
The cloud-based policies are for enforced user-based settings management and can complement group policies.
It only works for the Offce 365 ProPlus suite.
- Announcement of cloud-based policy management for Office 365 ProPlus https://techcommunity.microsoft.com/t5/Office-365-Blog/Announcing-the-new-cloud-based-policy-management-service-for/ba-p/310405
- Administrative Template files (ADMX/ADML) and Office Customization Tool for Office 365 ProPlus, Office 2019, and Office 2016 https://www.microsoft.com/en-us/download/details.aspx?id=49030
- Deploying Office apps with ConfigMgr + new MDM-less policy management (2019)