AWS=Amazon WEB Services
AWS stands for Amazon Web Services. There's a reason for that which is that AWS is primarily good at hosting Linux based Web servers. Microsoft Azure is more focused on corporates who want to move Windows server based systems into the cloud, which is why they are offering attractive licence deals for Windos Server and MS SQL in Azure. I suspect that this sort of workload aligns more closely with US DoD requirements. I have no doubt that Microsoft can fulfil this contract entirely.