What Is a Deployment Pipeline?

The DevOps Handbook: How to Create World-Class Agility, Reliability, and Security in Technology Organizations
Gene Kim, Patrick Debois, Jez Humble, John Willis
amazon.com
A release (the changes that get deployed) will typically consist of multiple version control commits, unless the organization has achieved a single-piece flow where each commit can be released to production (a practice known as continuous deployment).