The US Navy has successfully shut down more than two dozen legacy IT systems as part of its Operation Cattle Drive modernization effort.

As reported by Defense Scoop, acting CIO Barry Tanner said at the recent West 2026 conference that the Navy has identified hundreds more systems that will also be revamped, merged, or decommissioned in the near future.

In addition, the Defense Information Systems Agency (DISA) has recently detailed a new cloud platform.

Operation Cattle Drive was launched in late 2020 and aims to "round up" the Navy's old, redundant, and vulnerable IT assets to free up funds for higher-priority platforms and pursuits.

Updates on the project have been sparse, but it was previously stated that as of 2022, $150 million had been freed up through the effort.

CIO Tanner told the audience: This has been the year of actually landing on enterprise services and making that real. In the coming days, we’ll be seeing some specific direction from the [Undersecretary of the Navy Hung Cao] mandating the use of enterprise services across the department — and executing Cattle Drive, which again, we’ve been talking about for a while — but at scale and at speed.”

Tanner added: "In the last six to eight months, we have identified over 200 systems that are either duplicative of enterprise services that exist already today, or are legacy in nature and need to be modernized and consolidated with others. We’ve already turned 25 of those off.”

A large portion of the Navy's legacy systems is expected to be absorbed into enterprise services.

In other defense tech news, DISA has launched a new cloud environment that it aims to help deliver cloud capabilities faster to warfighters, reports Breaking Defense.

Announced at the West 2026 conference, DISA's technical director of hybrid cloud, Nolan Brown, said: “In order to address that change, our leadership … has developed what we are calling the DISA Cloud Environment.

“The DISA Cloud Environment is our attempt to modernize what we deliver to the warfighter through a host of tools and products … to accelerate the speed of deployment for new capabilities where it’s needed, when it’s needed, and what exactly is needed.”

The DISA Cloud Environment will combine classic, private, and commercial hosting, including via DISA's hosting and compute center. According to Brown, it is not a single product but a set of "umbrella services."