The U.S. Department of Defense Tuesday said it has scrapped its contentious, multibillion-dollar Joint Enterprise Defense Infrastructure (JEDI) cloud contract with Microsoft and would instead seek bids under a new Joint Warfighter Cloud Capability (JWCC) contract that would be awarded to multiple vendors.

In a blow to Microsoft and a win for Amazon Web Services, the DOD said the JEDI award—made in October 2019 and estimated to be worth up to $10 billion during a potential 10-year period—doesn’t meet its current needs after its implementation had been delayed for 20 months by AWS litigation contesting the contract.

“The department has determined that, due to evolving requirements, increased cloud conversancy and industry advances, the JEDI Cloud contract no longer meets its needs,” the DOD said in a statement.

Here’s a look at seven things to know about the history of the JEDI contract, the legal wrangling surrounding the contract, what happens next, and the reactions of Microsoft and AWS to Tuesday’s news.