The sovereign cloud will be supported by a dedicated European Security Operations Center (SOC), led by an EU citizen residing in the EU, who will advise the managing director and assist customers and regulators on security matters. Regardless of Amazon's data sovereignty pledge, the parent company remains under American ownership, and may still be subject to the Cloud Act, which requires US companies to turn over data to law enforcement authorities with the proper warrants, no matter where that data is stored. As Frank Karlitschek, CEO of Germany-based Nextcloud, told us in March: "The Cloud Act grants US authorities access to cloud data hosted by US companies. It does not matter if that data is located in the US, Europe, or anywhere else."
This seems to be a key thing about sovereignty that can’t be addressed, surely?