This book should have made clear that Continuous Delivery is much more than just an automation of infrastructure and an optimization of deployment. In fact, the central objectives of Continuous Delivery are:
Faster and more frequent deployment results in faster feedback from production. The different test phases also focus on providing feedback with regards to software problems as fast as possible.
Tests and deployment are automated for Continuous Delivery to allow for rapid feedback.
The extensive automation allows one to exactly reproduce test results and software installations.
• Easier Error Search
All changes to servers and software are versioned. ...