Microsoft has closed its $69 billion acquisition of Activision Blizzard, completing the largest buyout in the history of the video game industry and ending a transaction process that stretched across roughly two years of regulatory scrutiny.

The completion transfers control of Activision Blizzard's portfolio — including the Call of Duty, Warcraft, Diablo and Overwatch franchises — to Microsoft Gaming, uniting one of the world's largest platform holders with one of its largest third-party publishers under a single corporate roof.

What does the closing actually change?

The deal's completion moves a publisher of Activision Blizzard's scale under first-party ownership. Microsoft now controls development studios and intellectual property that previously generated revenue across all platforms on neutral commercial terms.

The headline figure of $69 billion makes this the biggest acquisition ever recorded in the games sector, and among the largest in the broader technology and entertainment industries. The size alone reshapes expectations for what consolidation in gaming can look like.

For Microsoft, the transaction materially expands its content library across console, PC and subscription services. For competing platform holders, it removes a major independent publisher from the open market.

How did the deal reach completion?

The acquisition, first announced in January 2022, spent close to two years under review by competition regulators in multiple jurisdictions before closing. The final approvals cleared the last obstacles between Microsoft and outright ownership of Activision Blizzard's operations.

With the deal now closed, integration work begins: combining corporate structures, aligning development priorities and determining how Activision Blizzard's franchises fit into Microsoft's publishing and service strategies.

What should studios and partners watch next?

The immediate question for the industry is execution. Microsoft must now integrate a publisher of this magnitude while demonstrating that the $69 billion outlay produces returns — through subscription uptake, platform engagement or franchise performance.

Watch how quickly Microsoft details its post-close plans for Call of Duty's multiplatform availability and how Activision Blizzard's release slate factors into Microsoft's next fiscal-year guidance.