Microsoft won in a tender valued at US $ 10 billion to provide cloud infrastructure for the US Department of Defense. The investment has in mind the extension of the US Department of Defense IT modernization plan and the construction of the JEDI cloud infrastructure. The huge project aroused a lot of controversy from the beginning, most of all the surprise was the choice of the concern, most observers bet that the contract will be won by the operator of the platform Amazon Web Services. It was also feared that awarding such a gigantic order to only one supplier (that was the assumption of the project) would make it gain a gigantic advantage over competitors in all future business contacts with the Pentagon. In the Pentagon statement informing about the selection of the contractor, it was explicitly taken into account that the tender settlement process was very transparent and all candidates were evaluated according to the same criteria. However, Amazon has doubts and has already complained about the whole case. The group’s representatives do not hide their surprise, and what is more – they suggest that if the decision-making process was based solely on a comparison of the terms of the bids submitted by the bidders, the result would certainly have been different.