Microsoft introduced us to the notion of their Sovereign Private Cloud in June 2025 (see the announcement here: https://bit.ly/3KYvuqj). It’s designed for customers who need to meet strict sovereignty requirements and combines Azure Local and Microsoft 365 Local. Azure Local’s been around a while, but Microsoft 365 Local is new. It’s built on the Azure Local infrastructure, and enables organisations to deploy the traditional Exchange Server, SharePoint Server, and Skype for Business Server products entirely within their sovereign environment. To that end, the new SE versions of these products will be supported until at least 31 December, 2035.

Find information on Microsoft 365 Local here: https://bit.ly/3Wosztx, and the earliest End of Support date information here: https://bit.ly/48QNrRC.