"Is the CLOUD Act only applicable to U.S. cloud service providers?"

"No. The CLOUD Act applies to all electronic communication service or remote computing service providers that operate or have a legal presence in the U.S. For example, the CLOUD Act is also applicable to a cloud service provider that is headquartered in the EU and has operations in the United State"

https://aws.amazon.com/compliance/cloud-act/

Seems intentionally misleading. While I agree exposure to US surveillance in non-US providers likely isn't zero, it's significantly harder for the US to do this internationally for legal, practical & political reasons. AWS is not a neutral voice on their competitor's limitations.

> also applicable to a cloud service provider that is headquartered in the EU and has operations in the United State(sic)

As if any company isn't going to create a subsidiary for that.