Cloudflare Acquires Deno to Scale Workers Programming Model
AI-generated image · US National Wire
The move integrates Deno's runtime expertise to simplify server development and AI agent infrastructure.
Cloudflare has acquired Deno, the startup founded by Ryan Dahl and Bert Belder, according to reporting from TechCrunch. While financial terms were not disclosed, TechCrunch notes that Deno had previously raised $26 million, including a Series A led by Sequoia.
Cloudflare intends to use the acquisition to enhance its Workers platform, which allows users to run software on Cloudflare's network. Kenton Varda, principal engineer for Cloudflare Workers, told TechCrunch that the company aims to remain open source to avoid creating "lock-in." Ryan Dahl stated on the Deno blog that the goal is to make the Workers programming model the "mainstream way to build servers," regardless of whether they run on Cloudflare's network or independent infrastructure.
The integration focuses heavily on celld, an open-source implementation of Workers. Dahl explained that celld allows developers to build distributed applications where scaling is integrated into the programming model rather than the infrastructure. Dahl specifically highlighted the utility of this model for AI, noting that Durable Objects provide the persistent state, serverless execution, and WebSockets necessary for scaling AI agent harnesses.
As part of the transition, the Deno team will cease developing a separate runtime and hosting service. According to the Deno blog, Deno Deploy will shut down in six months, while the Deno runtime will receive bug fixes and security updates for one year before development ends. JSR will continue to operate, with its infrastructure migrating to Cloudflare.