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A deployment is a snapshot of the code and environment variables required to run an application. A new deployment can be created via deployctl or automatically via Deploy's Github integration if configured.

Deployments are immutable after they have been created. To deploy a new version of the code for an application, a new deployment must be created. Once created, deployments remain accessible.

All available deployments are listed on your project page under the Deployments tab, pictured below. Old deployments can be deleted via deployctl and via API.

showing the deployments tab in the project dashboard

Custom domains Jump to heading

There can also be other URLs that can point to a deployment, like custom domains.

Branch domains Jump to heading

<projectname--branchname>.deno.dev is also supported.

Production vs. preview deployments Jump to heading

All deployments have a preview URL that can be used to view this specific deployment. Preview URLs have the format {project_name}-{deployment_id}.deno.dev.


A deployment can either be a production or a preview deployment. These deployments do not have any differences in runtime functionality. The only distinguishing factor is that a project's production deployment will receive traffic from the project URL (e.g. myproject.deno.dev), and from custom domains in addition to traffic to the deployment's preview URL.

Promoting preview deployments to production deployments via Deno Deploy UI Jump to heading

Preview deployments can be "promoted" to production via the Deno Deploy UI:

  1. Navigate to the project page.
  2. Click on the Deployments tab.
  3. Click on the three dots next to the deployment you want to promote to production and select Promote to Production promote_to_production

Promoting deployments to production is restricted to deployments that already use the production KV database. This is particularly relevant for GitHub deployments that use a different database for preview and production deployments. Deployments (even those that use the preview KV database) can always be redeployed to production using the deployctl deployments redeploy command.

Creating production deployments via deployctl Jump to heading

If you are deploying your Deno code with deployctl, you can deploy directly to production with the --prod flag:

deployctl deploy --prod --project=helloworld main.ts