For the sake of your convenience, I have divided my article into three chapters:

• Chapter 1. "Let's Get It Installed in a Snap". Here I will tell you how to prepare a High Availability infrastructure and how to set up WooCommerce on it. Spoiler: it's really easy if you use proper tools.
• Chapter 2. "Let's stress it! Is Horizontal Autoscaling good?" Here I will talk about the stress test I ran and the way I adjusted the infrastructure to survive the load. Also, here you can find real costs of a WooCommerce website.
• Chapter 3. "Let's stress it once again! Actually, Horizontal Autoscaling is good!" You're here.