The DevOps Handbook & Accelerate are the source material for this episode. 

The Principle of Feedback, or the second way of DevOps, describes using right to left feedback in the value stream. This episode explores how telemetry is more than error data or alerts. When used right (i.e. paired with experimentation), telemetry provides an objective way to move towards shared goals. 

Books

• The DevOps Handbook by Gene Kim, Jez Humble, John Willis, Patrick Debois
• Accelerate by Nicole Forsgren, Jez Humble, Gene Kim