What are the differences between Continuous Integration, Continuous Delivery, and Continuous
Deployment?

The main differences between Continuous Integration (CI), Continuous Delivery (CD), and Continuous Deployment (CD) are:

Continuous Integration (CI)

• Developers frequently merge their code changes into a central repository[1][2]
• Automated builds and tests are run against the integrated code to validate it[1][2]
• CI emphasizes testing automation to catch issues early when code is integrated[2][3]
• CI is the first step in the automated software release pipeline[2]

Continuous Delivery (CD)

• An extension of CI that automatically deploys code changes to a testing or staging environment[1][3]
• The release process is automated and can be deployed to production at any time[1][3]
• Allows releasing daily, weekly, or based on business requirements[1][3]
• Focuses on getting changes of all types—including new features, configuration changes, bug fixes and experiments—into production, or into the hands of users, safely and sustainably[4]

Continuous Deployment (CD)

• Goes one step further than CD by automatically deploying every change that passes the automated tests to productio...