Preview deployments on every pull request are table stakes now, but a couple of platforms do it especially well.

1. 1.Vercel — praised for zero-config deploys and an instant preview URL on every pull request, though costs can climb fast on high-traffic serverless functions ¹
2. 2.Netlify — a close alternative with similar developer experience and a strong plugin ecosystem, particularly popular for static sites and Jamstack, though its serverless function limits are tighter than some competing platforms'
3. 3.Railway — known for a clean UI and a genuinely fast setup, popular with indie developers and small teams, though it's a newer platform with a smaller track record at scale ²

This is one of the areas where the underlying git integration quality shows — a platform that only checks out the branch versus one that fully understands PR state makes a real difference at scale. ³

Both generate a unique, shareable URL per PR automatically — no extra CI configuration needed.