Continuous Delivery is a software development discipline where you build software in such a way that the software can be released to production at any time.

The deployment pipeline is the key pattern that enables continuous delivery. A deployment pipeline implementation provides visibility into the production readiness of your applications by giving feedback on every change to your system. It also enables team members to self-service deployments into their environments. Learn how to create and manage a deployment pipeline, and how to use the crucial information it provides on the bottlenecks in your software delivery process so you can work to continuously improve it.

“Done” is a simple yet often misinterpreted word. To me, it means finished, finalized, and completed. Being done means that there is nothing left to do. Done is simple to define; however, delivering a done Increment remains one of the fundamental and more elusive requirements of Scrum and agility.

what are characteristics of a good story? The acronym "INVEST" can remind you that good stories are: I – Independent; N – Negotiable; V – Valuable; E – Estimable; S – Small; T – Testable.

Critical Mass of Software: the state of a software system when the cost of changing it (enhancement or correcting defects) is less economical than re-writing it.

"Of a software product, describes a condition of the software such that fixing one bug introduces one plus epsilon bugs."