According to the article, it's an hour (ish) for the initial setup, around 20 minutes to provision new infrastructure (add or remove instances), and around 10 s

According to the article, it's an hour (ish) for the initial setup, around 20 minutes to provision new infrastructure (add or remove instances), and around 10 seconds to deploy. The key point being you don't need to add a new server every time you push code.