A battle royale for a multibillion-dollar government computing contract is now down to its final candidates.

Technology giants Amazon.com  (AMZN - Get Report) and Microsoft  (MSFT - Get Report) are the two remaining companies competing to provide cloud computing services to the Pentagon, according to multiple press reports on Wednesday that cited Defense Department sources. 

It's a deal that could be worth up to $10 billion over a decade-long contract, which would provide Joint Enterprise Defense Infrastructure Cloud, or JEDI.

The news means that International Business Machines  (IBM - Get Report) and Oracle   (ORCL - Get Report)  are now out of the running for the business.

The ultimate winner could get announced as soon as July, but the Pentagon already delayed an earlier decision date which was supposed to be last September.

So far the Defense Department hasn't issued any press statements on its website. 

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Constable owns none of the securities listed in this story.