The Pentagon on Friday reaffirmed Microsoft as winner of a cloud computing contract potentially worth $10 billion, although the start of work is delayed by a legal battle over rival Amazon's claim that the bidding process was flawed.

“The department has completed its comprehensive re-evaluation of the JEDI cloud proposals and determined that Microsoft’s proposal continues to represent the best value to the government,” the Pentagon said.

The Pentagon had requested time to review how it evaluated certain technical aspects of the bids after the judge who is presiding over Amazon's bid protest in the U.S. Court of Federal Claims issued a preliminary injunction on Feb. 13. The judge said that Amazon’s challenge likely had merit in some respects.

The contract was awarded to Microsoft last October, prompting Amazon to cry foul.

Amazon Web Services, a market leader in providing cloud computing services, had long been considered a leading candidate to run the Pentagon’s Joint Enterprise Defense Infrastructure project, known as JEDI. The project will store and process vast amounts of classified data, allowing the U.S. military to improve communications with soldiers on the battlefield and use artificial intelligence to speed up its war planning and fighting capabilities.

In April, a government watchdog concluded that the contracting process was in line with legal and government purchasing standards. The Defense Department inspector general found no evidence of White House interference in the contract award process. But the report said investigators could not fully review that aspect of the matter because the White House would not allow unfettered access to witnesses.

Amazon has asserted that the bidding was improperly influenced by President Donald Trump’s dislike of Amazon and its CEO, Jeff Bezos. Bezos owns The Washington Post, a news outlet often criticized by Trump.