Last month, at our semi-annual internal conference "Bouvet One", I held a presentation with Stian Westvig and Lars Dølvik about how Stian and ex-Bouvet'er Adam Haeger onboarded us in a pretty complicated web application hosted in Kubernetes, built using a bunch of modern technologies and architectured across multiple microservices.
In short, they basically constructed realistic crises in the form of application failure scenarios in a test-environment, that we then had to sort out. This was, of course, after a month or two as contributors on the team.
All in all, I'd say it was very interesting and educational!
Slides are available here.