Deno is joining Cloudflare

What happened

The Deno team is joining Cloudflare to radically simplify self-hosting Workers and Durable Objects, so developers can use the same primitives in more places. For what this means and how it came about, here’s the story from Ryan Dahl, Senior Principal Engineer, and Kenton Varda, Distinguished Engineer. Cloudflare is an information and communications technology company based in San Francisco.

Workers Acquisitions Durable Objects JavaScript Workers October 9, 2026 Deno is joining Cloudflare Kenton Varda and Ryan Dahl 1 minute read COPY URL The Deno team is joining Cloudflare to radically simplify self-hosting Workers and Durable Objects so developers can use the same primitives in more places. Node.js was an exploration of what a purely asynchronous programming model could enable.

Removing sync networking made it easier to build systems that previously required much more machinery. The bigger problems are around networked applications: distributing computation, coordinating state, data storage in general, and autoscaling to meet demand.

Something about that old IRC demo has always bothered me — it was a single server, single thread even. It could handle many user connections, but it would start getting slow if you had too many.