https://www.theregister.co.uk/2018/07/25/office_2019_server_preview/

Microsoft threw a commercial preview bone to cloud-phobes* this week in the form of on-premises versions of its Server and Office applications.

While the software giant really, really wants its customers snugly ensconced in the loving embrace of Office 365, realists within Redmond Towers accept that a large portion of their customers would rather keep their data firmly within their own data centres.