That's not substantiated. There are a lot of reasons that Azure could have won this project, highlighted by the fact that they have decades long relationships in terms of executing on government contracts.
The claim is not substantiated publicly because Amazon's filing is currently under seal. Of course, there are many other possible reasons but those are not substantiated either.
Either company could have won the project - this isn't about their merit. It's about whether the decision was personally influenced by Trump because he hates Bezos.
