Dark launching is the term for releasing new features to specific users or groups for testing feedback (performance, csat, usability, etc) - back in the day of

Dark launching is the term for releasing new features to specific users or groups for testing feedback (performance, csat, usability, etc) - back in the day of shipped software it was just called "feature flags." It's a standard part of zero planned downtime product development. See LaunchDarkly for a commercial provider of dark launching services.