Continuous testing is the practice of executing automated tests throughout the entire software development and delivery lifecycle to obtain immediate feedback on business risks and quality. Unlike traditional testing confined to a specific phase, continuous testing integrates testing activities from requirements definition through production deployment and monitoring, embedding quality validation into every stage of the CI/CD pipeline. In DevOps and Agile environments, continuous testing serves as the technical backbone that enables teams to deploy multiple times per day while maintaining high reliability. A crucial insight: effective continuous testing isn't about running all tests all the time—it's about running the right tests at the right time with intelligent orchestration that balances speed, coverage, and feedback quality.