Fundamentally, Amazon will not promise you they will break the law. They are subject to US regulations as well as German ones (in this case). If these regulations demand your data be accessed or removed or keys compromised, it will happen. Not because of US, Germany or Amazon but because that’s how jurisdictions work. Beaides, there is no reasonably feasible method for learning what these regulations actually say on a given day, a lot of it is in bylaws and you just can’t keep track of all ministerial orders of all the applicable jurisdictions. Amazon does have an algorithm to determine course of action in case of compliance conflict, but they will not publish it for obvious reasons.