Amazon.com is contesting the Pentagon’s award of an up to $10 billion cloud computing deal to Microsoft.

The company filed notice last Friday that it will formally protest the decision on the Joint Enterprise Defense Infrastructure Cloud, known as JEDI. In a company-wide meeting on Thursday, Amazon Web Services’ CEO Andy Jassy said it would be challenging for a U.S. agency to award a contract objectively when the president is disparaging one of the contestants, according to an Amazon spokesman.

The company confirmed Jassy’s comments and said, “Numerous aspects of the JEDI evaluation process contained clear deficiencies, errors, and unmistakable bias- and it’s important that these matters be examined and rectified.”

The Defense Department’s award was announced last month, with President Trump to publicly derided Amazon’s bid for the high-stakes contract.