[Editor’s Note: A reference in the headline to the financial value of the contract has been corrected since the original post.]

Big cloud players like Microsoft and Amazon Web Services make serving the federal government a major part of their business, but they’re not alone. IBM just landed a U.S. Army contract that could be worth $62 million.

IBM will provide private infrastructure as a service (IaaS) to the Army’s Redstone Arsenal, near Huntsville, Ala., under a one-year order with four one-year renewal options, IBM said in a release. Plans call for the Army to migrate as many as 35 applications to its new cloud within the first year.

“With this project, we’re beginning to bring the IT infrastructure of the U.S. Army into the 21st century,” said Lt. Gen. Robert Ferrell, the Army’s CIO, in the release. “Cloud computing is a game-changing architecture that provides improved performance with high efficiency, all in a secure environment.”

The project requires Defense Information Systems Agency (DISA) Impact Level 5 provisional authorization, which allows dealing with controlled, unclassified information. IBM won that authorization for its IaaS in February.

The deal builds on IBM’s existing relationship with the Army, which last year adopted an IBM hybrid-cloud offering for its worldwide operations. That offering connects the Army’s on-premises computers to IBM’s cloud for greater performance, scalability and security.

Microsoft’s Azure Government last week won provisional authorization for Impact Level 5. It has made a special effort to accommodate Azure to the federal government and also counts the feds among its biggest on-premises software customers, just last month signing a $927 million contract to provide technical support to DISA.

AWS’s CloudWatch Logs — a service to monitor, store, and access log files from Amazon Elastic Compute Cloud (EC2) instances and other sources — recently got provisional authority to operate at the FedRAMP High baseline within AWS’s specially dedicated GovCloud (U.S.) region.

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