I only used this feature once but it was instantaneous. The official doc [1] also also mentions "Quickly distribute your builds to a small set of trusted tester

I only used this feature once but it was instantaneous. The official doc [1] also also mentions "Quickly distribute your builds to a small set of trusted testers without the need to wait for app reviews." [1] https://play.google.com/console/about/internal-testing/ https://play.google.com/console/about/internal-testing/