Some of my fav bits from the blog:

Is a solution complex because it’s complex for the end user? Is it complex if it’s complex for an API consumer? Is it complex if it’s complex for the person maintaining the API service? Is it complex if it’s complex for someone outside the team maintaining it to understand? [..] There’s a fixed amount of complexity in the problem to be solved, and you can choose to either solve it, or leave it for those downstream of you to solve that problem on their own.