What is CI, CD & CT?



CI, CD, and CT are terms related to software development and deployment processes. They stand for Continuous Integration (CI), Continuous Deployment (CD), and Continuous Testing (CT). Here's a brief explanation of each:

  1. Continuous Integration (CI):

    • Definition: CI is a software development practice where developers regularly merge their code changes into a central repository, and each integration is verified by an automated build and automated tests.
    • Purpose: The goal of CI is to detect and address integration issues early in the development process, ensuring that the codebase is always in a working state.

  2. Continuous Deployment (CD):

    • Definition: CD is an extension of CI that automatically deploys code changes to a production environment after passing automated tests in the CI phase.
    • Purpose: CD aims to automate the entire process of deploying code changes to production, reducing manual intervention and the risk of errors. It allows for more frequent and reliable releases.

  3. Continuous Testing (CT):

    • Definition: CT is the practice of running automated tests throughout the software development lifecycle, from the early stages of development to production, to ensure that the software meets the required quality standards.
    • Purpose: Continuous Testing helps identify defects and issues early in the development process, ensuring that the software is thoroughly tested at every stage. It supports the principles of CI and CD by providing quick feedback on the quality of code changes.

In summary, CI focuses on integrating code changes frequently and automatically checking for integration issues, CD extends this to automate the deployment of changes to production, and CT ensures that automated testing is an integral part of the development process to maintain software quality. Together, these practices contribute to a more efficient and reliable software development and deployment pipeline.

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