What’s the Difference Between Continuous Integration, Continuous Deployment and Continuous Delivery?

Continuous Integration (CI), Continuous Delivery (CD), and Continuous Deployment are practices aimed at improving the software development and release process by increasing speed and reliability through automation. CI involves frequently merging developers' code changes into a shared repository, triggering automated tests to ensure code health. CD extends CI by automating the release process, allowing for frequent, manual deployment approvals. Continuous Deployment takes automation further by automatically deploying every change that passes testing to production, eliminating manual approval steps. These practices are not mutually exclusive and can be integrated sequentially, with each step building on the previous one. While CI focuses on integrating and testing code, CD automates the preparation for production release, and Continuous Deployment automates the entire process, requiring robust monitoring and recovery systems. These methodologies help streamline development workflows, enabling developers to focus on coding while minimizing manual intervention, ultimately leading to more frequent and reliable software releases.