The Pentagon has awarded a $10bn (£8bn) cloud-computing contract to Microsoft, following a heavily scrutinised bidding process in which Amazon had been seen as the favourite.
The company said it was “surprised” by the decision.
What is Jedi?
The Department of Defense wants to replace its ageing computer networks with a single cloud system.
Under the contract, Microsoft will provide artificial intelligence-based analysis and host classified military secrets among other services.
It is hoped that Jedi will give the military better access to data and the cloud from battlefields.