In the appeal, Microsoft claims the CMA made "fundamental errors" in its assessment, including wrongly defining the cloud gaming market as a separate entity to the overall gaming market. Microsoft's appeal also claims that beyond market definition issues, the CMA made "irrational" conclusions, such as claiming that Activision would put its games on cloud services, something the company has shown little to no interest in prior to the merger agreement with Microsoft. Elsewhere in the appeal, it is also claimed that the CMA made wrongful calculations in its assessment of Microsoft's position in the cloud gaming market. You can read the full summary document, HERE.