Microsoft may be on the verge of pulling off one of its biggest coups yet by securing Amazon as a customer.

Amazon and Microsoft compete in the cloud computing space, with the companies being the first and second-largest cloud providers respectively. Despite being rivals, a new report says Microsoft is on the verge of gaining Amazon as a Microsoft 365 customer.

According to Insider, via Reuters, Amazon is getting ready to purchase upwards of one million Microsoft 365 licenses, in a five-year deal that is estimated to be worth more than $1 billion.

It is believed Amazon will begin deploying as early as November 1.