Microsoft must face a mass lawsuit alleging it overcharged thousands of British businesses to use Windows Server software ‌on cloud computing services provided by Amazon, Google and Alibaba, ‌a London tribunal ruled on Tuesday. Competition lawyer Maria Luisa Stasi is bringing the case on behalf ​of nearly 60,000 businesses that run Windows Server on rival cloud platforms. They argued at a hearing last year that the businesses were overcharged because ‌Microsoft charges higher wholesale ⁠prices for Windows Server than for users of Azure, costs that are passed on to customers and make Azure cheaper ⁠than Amazon's AWS or Google Cloud.