Amazon Web Services has filed a lawsuit against the Pentagon's decision to award its JEDI cloud computing contract to Microsoft, claiming the procurement process had "clear deficiencies".
At $10bn it's one of the largest federal IT contracts in history, built around the need to update the US military IT infrastructure through a commercial cloud provider.
It was awarded to Microsoft on October 25.
AWS is now on the offensive claiming that it was shut out of the bidding process due to "unmistakeable bias" led by President Donald Trump.
"Numerous aspects of the JEDI evaluation process contained clear deficiencies, errors, and unmistakable bias- and it's important that these matters be examined and rectified," an AWS spokesperson told CPI.
The allegation is that the administration's "bias" stems from President Trump's antagonism towards Amazon CEO Jeff Bezos, who also owns the Washington Post newspaper.
"We believe it's critical for our country that the government and its elected leaders administer procurements objectively and in a manner that is free from political influence," the spokesperson added.
"AWS is uniquely experienced and qualified to provide the critical technology the US military needs, and remains committed to supporting the DoD's modernisation efforts.
AWS now joins Oracle's attempts to scuttle the contract in a federal court.
Two weeks ago, Oracle accused the Pentagon of being involved in "corruption of a high order."
However, Oracle is also levelling those allegations against a number of former AWS execs as well.
Oracle's suit claims that AWS persuaded officials to write the contract's criteria to make them geared towards only AWS (and Azure).
Both court cases have thrown a spanner in the works in one of the US government's most expensive IT projects.
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