Set up a Polymer app with
npx and move into the project directory, choosing the blank option when presented:
mkdir my-polymer-app && cd my-polymer-app && npx polymer-cli init polymer-3-starter-kit
Once deployed, you will get a URL to see your app live, such as the following: https://polymer.now-examples.now.sh
To deploy your Polymer app with a Vercel for Git Integration, make sure it has been pushed to a Git repository.
Import the project into Vercel using your Git Integration of choice:
After your project has been imported, all subsequent pushes to branches will generate Preview Deployments, and all changes made to the default branch (commonly "master") will result in a Production Deployment.
Set up a Polymer app with a few clicks using the Deploy button, and create a Git repository for it in the process for automatic deployments for your updates.