"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"
"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/