I am not sure whether this was a political decision or not. What I do know is that Amazon is very happy today.
The U.S. Department of Defense has canceled a planned 10-year, $10 billion cloud-computing contract known as JEDI that had been awarded to Microsoft in 2019, while launching plans for a new multivendor cloud-computing project that will likely be split between Microsoft and Amazon.com. The government said in a statement that “it has become clear that the JEDI Cloud contract, which has long been delayed, no longer meets the requirements to fill the DoD’s capability gaps.”