Preview Environment Tutorials

Give every change a live preview that runs against real backend services, without copying the whole environment. Each preview is a sandbox that runs only what changed and shares everything else.

Tutorial	Description
Vercel	Wire each Vercel preview deployment to a backend sandbox built from the same pull request, with GitHub Actions.
Multi-PR features	Test a feature that spans several pull requests and services as one preview, with a route group.
Mobile apps	Point an iOS app at a sandboxed backend with a routing header and compare it with the baseline.
Cost-efficient preview environments	Why sandboxes on a shared cluster cost less than a full copy of the environment per pull request.

For setting up previews on your own pull requests, see Preview environments and Pull request sandboxes.