Pull Request Previews
When you open a pull request on GitHub in the sentry repository, Vercel can automatically build and deploy the frontend code in your branch into a preview URL. This allows you to see the new code as it would be in production.
This is very handy for:
Previewing new frontend features that require complex interactions to understand how they work. This can be great if the specific feature you've built has a certain "feel" to it, that can only be expressed through actually using the interface in a web browser. The preview build will allow reviewers to quickly see how your feature works.
Validating that a bug fix is actually working in production, and doesn't suffer from worked on my machine syndrome.
Sharing new features that are highly sought after by the community that have not yet been merged. Especially if the feature is still undergoing development it may even be possible to get feedback from real users before the feature is merged.
When you open a Pull Request, the build preview will automatically start building and deploying through Vercel. When it is complete (after about 4 minutes) you will find the preview link in the panel above the GitHub Checks that says This branch was successfully deployed: