Microsoft says it "cannot guarantee" data sovereignty to customers in France – and by implication the wider European Union – should the Trump administration demand access to customer information held on its servers.

The Cloud Act is a law that gives the US government authority to obtain digital data held by US-based tech corporations irrespective of whether that data is stored on servers at home or on foreign soil. It is said to compel these companies, via warrant or subpoena, to accept the request.