This is just a quick note to remind folks that cloud service providers can (and often do) have exceptions to data residency. As an example, check out Microsoft Azure's platform notes here.
Operational statements like this change from moment to moment but, for the purpose of illustration, here's an example line:
Azure Machine Learning, may store freeform texts of asset names that the customer provides (such as names for workspaces, names for resource groups, names for experiments, names of files, and names of images) and experiment execution parameters aka experiment metadata in the United States for debugging purposes.
To be fair, this isn't anything specific to Microsoft. Most other commercial cloud service providers have similar stances. This is especially true for non-GA features and experimental functionality. In any event, it's still good information to keep top of mind. Good stuff!