Microsoft is now facing a serious test of its cloud licensing playbook, and the stakes go well beyond one billing dispute. A UK collective action alleges the company charged businesses more to run Windows Server on rival clouds such as AWS, Google Cloud, and Alibaba Cloud than it charged on Azure, with the claim now cleared to proceed toward trial by London’s Competition Appeal Tribunal. The case is large, politically charged, and financially meaningful: the claim is valued at roughly £2.1...