edge runtime

Deno Deploy

Deno Deploy runs TypeScript at the edge on the Deno runtime. This profile covers what it does, how it is priced, and where it stops being the right choice.

What the product actually does

Deno Deploy takes a TypeScript or JavaScript entry point and serves it from locations close to the user. The runtime is Deno rather than Node, which means URL imports instead of a package directory, permissions granted explicitly, and TypeScript without a build step.

The developer experience is the product. There is no bundler, no node_modules and no build configuration; a file that runs locally runs at the edge. For small services and API endpoints that is a materially shorter path than any container platform.

How pricing works once you are inside

Requests and compute time are the meters, with a free tier that covers a hobby project comfortably. The paid tiers add regions, custom domains and higher limits.

The number to watch is the request count rather than the compute, because an edge function that serves a small JSON payload costs almost nothing per invocation but is invoked on every page load of whatever consumes it.

Where it breaks down

Node compatibility is partial. Deno has a compatibility layer and it is good, but a dependency that reaches into Node internals will not run, and the failure appears at deploy rather than at build.

The ecosystem is smaller in every direction: fewer examples, fewer libraries, fewer answers when something goes wrong. A team that values a deep Stack Overflow archive will find this uncomfortable.

What switching costs

Low for a small service — the code is portable TypeScript. Moderate for anything using Deno's KV or queue primitives, which have no direct equivalent.

Sources

Deno public documentation and Deno Deploy pricing page, read October 2026.