Today, we're announcing that every Git push and Vercel CLI invocation will result in a new unique URL and a new immutable Deployment.
Existing Deployments will no longer be re-used if you try to create a new one.
This change will likely not impact you in a meaningful way. On November 20th 2020, we enabled automatic System Environment Variables by default. If that option is enabled, a new immutable Deployment will already be created every time.
Vercel always strives to give you real-time feedback on every change you push. To this end, we are working on leveraging smart incremental computation techniques to avoid redoing work that’s already been done.