- The entire Deno team, led by Node.js creator Ryan Dahl, is joining Cloudflare to build on the Cloudflare Workers and Durable Objects ecosystem.
- The Deno runtime will receive bug and security fixes for one year before development ends, while Deno Deploy will shut down in six months.
- JSR will remain operational on Cloudflare infrastructure, while new development pivots toward AI agent harnesses and celld.
In a massive shift across the JavaScript developer ecosystem, Cloudflare has officially acquired Deno. Deno founder Ryan Dahl—best known for creating Node.js before launching Deno to reimagine server software—announced that his entire team is joining Cloudflare to unify their distributed programming models.
Deno was originally built to challenge traditional JavaScript assumptions, offering modern security guarantees, out-of-the-box developer tooling, and eventual Node.js compatibility. However, as the team evolved the project into Deno Deploy and developed celld on top of the Cloudflare Workers model, integrating directly with Cloudflare’s underlying infrastructure became the natural next step.
This acquisition introduces major operational changes for existing Deno users. The team confirmed that development of the standalone Deno runtime will be phased out. Official support for the runtime will continue for one year with monthly releases limited to bug and security updates. After that point, primary development will end, though Deno will remain open source for community upkeep.
Meanwhile, Deno Deploy is set to shut down in six months, with Cloudflare offering migration support for paid customers transitioning to Cloudflare Workers. JavaScript Registry (JSR) will remain alive with its infrastructure shifting to Cloudflare, and the team will continue supporting rusty_v8 with plans to integrate it into workerd.
A central driver behind the move is the rapid expansion of AI workloads. Dahl highlighted that combining Durable Objects with celld creates an ideal environment for building AI agent harnesses—offering lightweight serverless execution, persistent state, WebSockets, and high-level JS interfaces. Moving forward, the combined engineering effort will focus on making this unified model the standard across both Cloudflare’s global network and self-hosted infrastructure.
Source: Original Coverage
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