Understanding Continuous Delivery: Practices, Benefits, and Differences from Continuous Deployment

Continuous Delivery is a DevOps software development practice. When adopting Continuous Delivery, the system automatically builds, tests, and prepares code changes for release to the production environment. Continuous Delivery extends Continuous Integration by deploying all code changes to test and/or production environments after the build stage. When properly implemented, developers always obtain a deployment‑ready build artifact that has passed a standardized testing process.

With Continuous Delivery, the system builds and tests each code change, then pushes it to a non‑production test or staging environment. Multiple parallel testing stages may exist before production deployment. In the final step, developers approve the update for production when it is ready. This differs from Continuous Deployment, where the system automatically pushes updates to production without explicit approval.

When using Continuous Delivery, developers can automatically run tests beyond unit tests, allowing verification of application updates across multiple dimensions before deployment to customer environments. These tests may include UI testing, load testing, integration testing, API reliability testing, and more. This enables more comprehensive validation and early detection of issues. With cloud services, developers can easily and efficiently create and replicate multiple test environments, something that was difficult to achieve on‑premises.

Continuous Delivery enables automation of the entire software release process. Every submitted revision triggers an automated pipeline that builds, tests, and delivers the update. The final decision to deploy to the actual production environment is triggered by the developers.

When adopting Continuous Deployment, the system automatically deploys revisions to the production environment without explicit developer approval, thereby achieving full automation of the software release process.

Advantages of Continuous Delivery

Automated Software Release Process

Continuous Delivery enables your team to automatically build, test, and prepare code changes for release to production, making software delivery more efficient and faster.

Improved Developer Efficiency

These practices free developers from manual tasks and encourage behaviors that reduce errors and defects in deployments to customer environments, thereby improving team efficiency.

Faster Defect Detection and Resolution

Through more frequent and comprehensive testing, your team can detect and resolve defects before they become major issues. Continuous Delivery makes it easier to perform additional types of testing on code because the entire process is automated.

Faster Delivery of Updates

Continuous Delivery helps your team deliver updates to customers faster and more frequently. When properly implemented, you will always have a deployment‑ready build artifact that has passed a standardized testing process.