Cloudflare Has Acquired Startup Deno

The web infrastructure firm will integrate the startup's team and technology to improve developer experience.

Updated on Oct. 9, 2026 in Software

Isometric editorial illustration of a structured server rack with interconnected cables, representing technical infrastructure integration. — Cloudflare has acquired software startup Deno, integrating its team and technology to enhance the company's serverless runtime and developer tools. AI Illustration. Upload story photo >

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Cloudflare has announced the acquisition of Deno, a software startup founded in 2018. As part of the move, the entire Deno team will join Cloudflare to focus on developing an enhanced serverless runtime.

Why it matters

Cloudflare aims to solve long-standing challenges in making its Workers runtime accessible to developers who operate outside of its specific network environment. Deno provides essential expertise in creating portable, self-hosted developer tools.

Deno previously raised $26 million in funding and launched the Celld open-source project in August 2026. The company will now merge its work into Cloudflare’s existing Workerd runtime, while Deno’s JSR registry will be maintained under Cloudflare ownership.

The players

Cloudflare

This web infrastructure and security company operates a global network focused on performance and developer services.

Deno

This startup is known for creating a modern runtime environment for JavaScript and TypeScript applications.

Ryan Dahl

He is a software engineer who previously created the Node.js runtime and later founded the Deno startup.

Bert Belder

He is a veteran software developer and co-founder of the Deno startup.

The details

The integration effort will be led by Deno co-founders Ryan Dahl and Bert Belder, who will oversee the merger of the Celld project with Cloudflare's existing Workerd platform. While the Deno runtime will continue to receive security and maintenance updates for one year, the Deno Deploy hosting service is scheduled to wind down.

Cloudflare launched its Workers serverless computing platform in 2017.
Ryan Dahl launched the Deno startup in 2018.
Cloudflare mistakenly blocked the Deno website and registry in 2021.
Deno introduced the open-source Celld project in August 2026.
Cloudflare announced the acquisition of Deno on October 9, 2026.

The Tech Race

This acquisition highlights the intensifying competition in the serverless computing market, where infrastructure providers are racing to offer the most developer-friendly runtime environments. It marks a shift from proprietary, cloud-locked services toward more portable, open-source-integrated solutions.

Developers currently using the Deno runtime can expect continued support for one year, providing a window to transition their workflows. Those utilizing Deno Deploy must migrate their hosted applications within six months to avoid service disruption.

The takeaway

This merger signals that the future of serverless computing relies heavily on bridging the gap between proprietary networks and open, developer-friendly standards. Users should prioritize evaluating their current reliance on Deno Deploy and plan for upcoming infrastructure migrations.

What happens next

Deno Deploy will officially shut down in six months, and the standalone Deno runtime will cease receiving security updates one year from the date of the acquisition.