Vercel vs Heroku

What runs under-the-hood.

An easy integration with popular Git repository hostings like Github, GitLab and Bitbucket.

Easy way to promote any previous build to production without the need to revert commits or data changes.

New build with a unique URL for every commit and pull request.

Events triggered on successful, canceled, or failed build.

Create team account and invite your teammates to the project.

Bring your own domain and connect to the project.

SSL certificate generated automatically.

HTTP 301 or 302 redirects from one URL to another. Rewrites work similar to reverse proxy and allow to send user to different URL without modifying the original URL.

An easy way to restrict access to the website for users who don't have password. Useful if you work on a new site and want to keep it in secret.

Skew Protection ensures client and server versions stay synchronized during deployments, preventing compatibility issues.

Number of projects you can have in Free Tier on one account.

The amount of time your build scripts run.

How many builds can be run at the same time?

The amount of data that is transferred to or from the CDN.

Build have to finish within the limited time. If not it will fail due to timeout.

The amount of memory that is allocated by system to build process. Some operations like image processing are expensive and might require more memory. For Node.js it is max-old-space-size setting.

In order to triger build, Git contributor has to be a paid team member.

Support for Edge Functions