Could you point me to the source. I was under the impression it is dead and Deutsche Telekom now collaborates with Google Cloud on the so called Sovereign Cloud [1].
Deutsche Telekom [0]:
"In den DE-Versionen Daten-Speicherung der Kundendaten ausschließlich in sicheren Rechenzentren in Deutschland mit der Zugangskontrolle durch den unabhängigen Datentreuhändern T-Systems"
This sounds as if Microsoft would not have access to data, which is managed by T-Systems independently. But there might of course be something in the fine print.
My browser is set to prefer English, cookie banners etc. are working, but the rest of the site won't switch, cannot find a button to manually switch either.
[1] https://cloud.google.com/t-systems-sovereign-cloud