Sovereign region or EU-native provider?

Pick a hyperscaler sovereign region — AWS European Sovereign Cloud, Azure with Bleu, Google with S3NS — when you need the hyperscaler's full service breadth and scale and your requirement is data residency plus EU-resident operations. That buys operational sovereignty, but the US parent stays reachable under the CLOUD Act, so it is not legal sovereignty. Pick an EU-native provider — OVHcloud, Scaleway, IONOS, STACKIT, T-Systems, Aruba — when legal sovereignty is the real requirement: an EU-jurisdiction company with no US parent sits outside the CLOUD Act's reach, at the cost of a narrower catalogue and smaller scale. The deciding question is which sovereignty you actually need — data residency and operational control, where a sovereign region is enough, or immunity from foreign legal compulsion, where you need an EU-parent provider. In a hyperscaler's marketing, 'sovereign' means the first, not the second.