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Continuous Delivery

TL;DR;

Continuous Delivery is a key DevOps practice that ensures software is always in a state that can be deployed to production, enabling faster and more reliable software releases. It relies on version control, test automation, deployment automation, and close collaboration between teams.

Definition​

Continuous Delivery (CD) is a software development practice where code changes are automatically built, tested, and prepared for a release to production. It expands upon Continuous Integration by deploying all code changes to a testing environment and/or a production environment after the build stage.

Goals​

  • Ensure software is always in a releasable state throughout its lifecycle.
  • Enable faster, more reliable software releases.
  • Improve developer productivity by reducing the complexities of deployment.
  • Enable faster feedback loop by pushing changes to users quickly and learning from user feedback.

Practices​

  • Use of a version control system where all changes are committed.
  • Automated testing to validate the correctness of the code.
  • Automated deployment process to push changes to different environments.
  • Infrastructure management as code to ensure consistency across environments.
  • Close collaboration between development, operations, and other stakeholders.
  • Monitoring and logging to quickly identify and resolve issues in production.