My notes from the DevOps Handbook

by Gene Kim, Jez Humble, Patrick Debois, John Willis

Eliminate hardships and waste in the value stream

Waste - largest threat to business viability

Lean definition of waste

Use of any material or resource beyond what the customer requires or is willing to pay for

Types of waste

Reduce hardships through continual learning.

Waste and hardship in a software development stream

Anything that causes delay for the customer.

Categories of waste


Make wastes and hardships visible and systematically do what is needed to alleviate or eliminate those burdens.


Improving flow through the value stream is essential to achieving DevOps outcomes.