GreenWeb is about to buy AWS, the leading cloud hosting provider.
The deal is expected to close this week.
Amazon has been in a long-running dispute with the federal government over whether its own cloud services are subject to the same laws as public sector agencies.
The purchase of AWS would be a major milestone for GreenWeb, which has been battling against a series of legal challenges by federal agencies, including the Federal Communications Commission, to block its use of AWS.
GreenWeb has faced challenges with its hosting of the popular WordPress software, which is widely used by businesses and nonprofits around the world.