Cloudflare Acquires Deno, Winding Down the Open-Source Runtime
Cloudflare has acquired Deno, co-founded by Node.js creator Ryan Dahl. The deal absorbs the team while winding down the independent Deno runtime project.
Key points
- Cloudflare acquires Deno, a company co-founded by Node.js creator Ryan Dahl.
- Deno had raised $26 million prior to the acquisition.
- The independent Deno runtime is being wound down as the team joins Cloudflare.
Cloudflare has acquired Deno, the software company co-founded by Ryan Dahl, who is widely known as the creator of Node.js. This acquisition brings the entire Deno team into Cloudflare while simultaneously winding down the independent Deno runtime project, marking a significant shift in the JavaScript execution landscape.
According to reporting by Paul Sawers at The New Stack, the acquisition integrates Deno’s workforce into Cloudflare’s existing structure. Deno had previously developed Celld, described as a self-hosted alternative to Cloudflare Workers. The company had secured $26 million in funding before this transaction, establishing itself as a notable competitor in the serverless execution space.
Context and Background
Deno was originally created as a modern alternative to Node.js, addressing several design criticisms Dahl had regarding his original project. Over time, Deno expanded beyond just the runtime to include tools and platforms that competed directly with Cloudflare’s own offerings. Specifically, Deno’s development of Celld provided users with a self-hosted option that mirrored the functionality of Cloudflare Workers, creating direct competitive overlap.
The decision to wind down the Deno runtime itself is a notable aspect of this deal. While the team is being absorbed, the independent open-source project that defined Deno’s identity is being discontinued. This suggests Cloudflare intends to integrate specific technologies or talent rather than maintaining a separate, competing runtime ecosystem alongside its own Workers platform.
Who Is Affected
Developers who relied on the independent Deno runtime for their applications will need to consider migration paths, as the project is being wound down. Users of Celld, the self-hosted alternative to Cloudflare Workers, may see changes in support or availability as the technology is absorbed into Cloudflare’s broader infrastructure. The $26 million in funding previously raised by Deno indicates a significant investment by backers who are now part of the Cloudflare ecosystem.
Security professionals should monitor how this consolidation affects the maintenance of open-source components previously managed by Deno. The integration of a direct competitor’s team often leads to rapid changes in product roadmaps and support structures. Understanding which specific Deno features are being retired versus those being integrated into Cloudflare Workers is essential for teams dependent on these tools.
What should you do?
Organizations using Deno runtime or Celld should review their infrastructure dependencies immediately. The winding down of the runtime means that long-term support for the standalone version is ending. Teams should evaluate whether their workloads can be migrated to Cloudflare Workers or other supported platforms. Monitoring official announcements from both Cloudflare and Deno regarding the timeline for the runtime’s shutdown is critical for planning.
What to do and how to stay safe: Cloudflare
- Audit current infrastructure to identify any services running on the Deno runtime or Celld platform that may be affected by the shutdown.
- Review Cloudflare’s documentation to understand how Deno’s technologies might be integrated into Cloudflare Workers for potential migration paths.
- Monitor official communications from Cloudflare and Deno for specific timelines regarding the winding down of the Deno runtime.
- Consult with development teams to assess the effort required to migrate applications away from the standalone Deno runtime.
Step-by-step guide: Cloud Misconfiguration Response: Containment, Recovery and Prevention Steps
General security guidance from the Threat Times newsroom. It is not confirmed advice from the organisations named in this story.
Frequently asked questions
What is happening to the Deno runtime?
The independent Deno runtime is being wound down as part of Cloudflare’s acquisition of the company and its team.
Who founded Deno?
Deno was co-founded by Ryan Dahl, who is also the creator of Node.js.
How much funding did Deno raise?
Deno had raised $26 million prior to being acquired by Cloudflare.
