At a recent Meetup, Matt Duftler from Google and Michael Graff from Netflix discussed testing in production with systems and processes at scale. They focused on automated canary deployments, which involve exposing a small number of users to a change before rolling it out to a broader audience. The speakers explained the concept of canary deployment and how Spinnaker and Kayenta make this possible. Automated Canary Deployment consists of provisioning a new baseline group running exactly what's already in production, alongside the canary group, and using configuration to determine significant metrics for comparison.