Continuous Integration (CI) is a software development practice where developers frequently merge their code changes into a central repository, often several times a day. The primary goal of CI is to catch bugs and integration errors early by automatically building and testing code each time a change is made. This practice encourages smaller, more manageable commits, which are easier to debug and less likely to cause major disruptions. CI tools, such as Jenkins, CircleCI, and GitHub Actions, automate the testing and build processes, ensuring that the software is always in a deployable state. By integrating regularly, teams can reduce integration problems, improve software quality, and accelerate the development process, making CI a critical component of modern DevOps cultures.