Microsoft Sovereign Cloud (Azure)
Microsoft's Sovereign Cloud and EU Data Boundary are the company's response to European data-residency pressure, and — like AWS — a hyperscaler-sovereign option rather than an EU-owned provider. The EU Data Boundary is "a geographically defined boundary within which Microsoft has committed to store and process Customer Data and personal data for our Microsoft enterprise online services, including Azure", and for those services data is "stored and processed ... in datacenters located in countries in the EU or EFTA".
Microsoft continues to expand its Sovereign Cloud and EU Data Boundary coverage across Azure and Microsoft 365, letting enterprises run Azure OpenAI models with an EU data-residency commitment.
Honest classification matters: Microsoft is a US company, so the same CLOUD Act debate applies as for AWS. Azure's sovereign controls suit organisations committed to the Microsoft ecosystem; those wanting EU ownership should compare IONOS, OVHcloud, Scaleway or SAP AI Core.