Continuous Integration (CI) is a software development practice where developers frequently integrate their code changes into a shared repository. Each integration is automatically tested to detect errors quickly, ensuring that new code works well with existing code. This process helps maintain software quality and reduces integration problems. By using CI, teams can identify bugs early in the development cycle, making it easier to fix issues before they become more significant problems. Tools like Jenkins and Travis CI are commonly used to automate the testing and integration process, streamlining development and improving collaboration among team members.