Deno joins Cloudflare and gives Deploy six months before shutdown

Deno is preparing to shut down Deno Deploy and stop developing its runtime as its entire team joins Cloudflare. In an October 9, 2026, announcement, Ryan Dahl set out six more months of operation for the hosting service and a year of maintenance for the runtime.

The team's next project tackles a gap in Cloudflare's platform: making the Workers programming model practical to run on infrastructure other than Cloudflare's. Dahl and Bert Belder will lead an effort to bring code and ideas from Deno's celld into workerd, Cloudflare's open-source Workers runtime. Cloudflare describes self-hosting as a use it wants to support as a first-class option, rather than leave developers to assemble themselves.

That distinction matters because an open-source runtime is not the same thing as a complete distributed hosting system. Cloudflare's Kenton Varda acknowledges that workerd's Durable Objects implementation works only within a single instance—“good enough for local testing, but unable to scale.” He also says Cloudflare failed to build enough surrounding services and tools to make self-hosting work well.

Durable Objects combine computation and persistent state. Cloudflare's documentation describes each as a special Worker with a globally unique name and attached storage, allowing multiple clients to reach the same object and coordinate through it. The engineering goal is to make that model easier to operate across machines outside Cloudflare's network.

This is a development plan, not an announcement that the combined system is ready. Cloudflare gives no delivery date in its post, saying more announcements will follow in the coming months.

For developers already using Deno's products, the commitments are more immediate:

- Deno Deploy: Six more months of operation before shutdown. Deno promises migration support for paying customers moving to Cloudflare Workers.
- Deno runtime: Monthly bug-fix and security releases for another year, after which the team will end its development. The runtime will remain open source, and Deno welcomes others to continue the work.
- JSR: Continued operation, with its infrastructure moving to Cloudflare.
- rusty_v8: Continued support, alongside work toward integrating it into workerd.