Amazon said it filed a motion on Wednesday evening to stop Microsoft’s JEDI contract work with the Pentagon until a court rules on Amazon’s protest of the $10-billion-contract award.

“It is common practice to stay contract performance while a protest is pending, and it’s important that the numerous evaluation errors and blatant political interference that impacted the JEDI award decision be reviewed,” said an Amazon Web Services spokesperson in an email. “AWS is absolutely committed to supporting the DoD’s modernization efforts and to an expeditious legal process that resolves this matter as quickly as possible.”

The motion comes as the U.S. Navy is moving its largest enterprise resource planning system — 72,000 users spread across six U.S. Navy commands – to the AWS cloud. In a blog post, AWS says the move, which happened 10 months ahead of schedule, “will put the movement and documentation of some $70 billion worth of parts and goods into one accessible space, so the information can be shared, analyzed, and protected more uniformly.”

JEDI, or Joint Enterprise Defense Infrastructure, is a $10-billion, 10-year contract that will move about 80% of all Department of Defense (DoD) data off premises and into a single cloud. The entire award process was fraught with lawsuits, protests, and charges of politics influencing the contract. In October, the DoD awarded the contentious cloud contract to Microsoft, which was a major upset for front-runner AWS.

About a month later, AWS filed a lawsuit in the U.S. Court of Federal Claims challenging the Pentagon’s decision. At the time, an AWS spokesperson suggested the process was biased and influenced by politics.

“AWS is uniquely experienced and qualified to provide the critical technology the U.S. military needs and remains committed to supporting the DoD’s modernization efforts,” the spokesperson said in an email. “We also believe it’s critical for our country that the government and its elected leaders administer procurements objectively and in a manner that is free from political influence. 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.”

In December, AWS CEO Andy Jassy implied his company — not Microsoft — should have won the $10 billion award.

“We feel pretty strongly that it was not adjudicated fairly,” Jassy said during a press conference at the AWS re:Invent show. “If you do a truly objective and detailed apples-to-apples comparison of the platforms, you don’t end up in the spot where that decision was made."

However, Microsoft President Brad Smith said that work on JEDI continues despite Amazon’s protest. “We have if anything been moving even faster since that contract was awarded,” Smith told CNBC last month.