CI/CD stands for Continuous Integration and Continuous Deployment. It is a set of automation practices designed to eliminate manual errors and speed up the software delivery lifecycle. Continuous Integration focuses on merging code changes into a shared repository frequently, where automated builds and tests are triggered. Continuous Deployment automates the release of these changes to production environments.
The workflow relies on pipelines. When a developer executes git push, a CI server like GitHub Actions creates an isolated environment to compile the code, run linters, and execute unit tests. If the pipeline fails, the build is rejected, preventing broken code from reaching the main branch and ensuring the stability of the master branch.
How it works
CI/CD is essential for teams practicing Agile or DevOps. It replaces manual deployment steps with repeatable scripts and infrastructure as code. Configuration is typically stored in version-controlled files like deployment.yaml or bitbucket-pipelines.yml, ensuring consistency across development, staging, and production environments.
Real-world data indicates that organizations using high-performing CI/CD pipelines experience 200 times more frequent code deployments and 24 times faster recovery from failures compared to teams using manual processes. This automation allows for canary releases where new features are gradually rolled out to a small percentage of users.