It very much depends on the complexity and scale of your site. StackOverflow is a bit of an extreme case. For example, if instead of having hundreds of domains

It very much depends on the complexity and scale of your site. StackOverflow is a bit of an extreme case. For example, if instead of having hundreds of domains serving millions of users with tons of user-generated content you're just serving static content from a single server on a small site, the entire process for you might actually be as simple as just running `certbot-auto` on the production server. I suspect the difficulty of switching for most sites will fall somewhere between these two extremes.