Continuous integration runs automated builds and tests whenever code changes, so problems are caught early. Continuous delivery packages each passing change so it can be deployed at any time, often to a preview environment first and then to production with a single approved step.
CI/CD turns releases from stressful events into routine ones. It also creates a record of what was deployed and when, which helps when diagnosing problems. Pipelines can include security scans, accessibility checks, and AI evaluations, so quality gates run every time rather than when someone remembers.