CI and CD processes like Continuous Integration (CI), Continuous Delivery (CD), and Continuous Deployment (CD) help software teams integrate code changes frequently and release software quickly. CI involves integrating code into a shared repository multiple times daily and automatically verifying each change. Continuous Delivery sets up software to be released to production at any time. Continuous Deployment means every code change is automatically deployed to production, allowing for many releases per day. Key aspects of CI include job definitions in repositories, autoscaling infrastructure, caching dependencies, using Docker for builds, and matrix builds across different environments and versions.