How to set up sub-domains for custom environments on Vercel

For custom environments on a project, can we have a sub-domain? For frontend and backend, we have a separate project for each.

The current domains are:

I want to have sub-domains for a test/staging environment like this:

Thanks in advance.

Hey, ! Welcome 👋

You can definitely create test.website-garden.com! You could either:

Create a test or staging branch in your Git repository
Go to your project Settings → Domains
Add test.website-garden.com as a custom domain
Click Edit on the domain and assign it to your test Git branch
Configure the CNAME record with your DNS provider
Push to the test branch and it will automatically deploy to test.website-garden.com

Or:

Unfortunately, you cannot create custom subdomains on Vercel’s default .vercel.app domain. However, you have these alternatives:

Use the auto-generated preview URLs for your test branch (e.g., domain-management-test-abc123.vercel.app)
Add your own custom domain to the backend project (e.g., api.website-garden.com) and then create test.api.website-garden.com
Use the Preview Deployment Suffix feature (Pro add-on) to customize all preview URLs with your own domain