Transitioning from Jenkins to Harness offers significant improvements in continuous integration (CI) by reducing the need for extensive scripting and manual configurations, leading to faster and more reliable software delivery. Jenkins, although a pioneering CI tool, is criticized for its outdated approach that requires manual intervention and complex scripting, which can be cumbersome and error-prone. The author shares personal experiences with Jenkins, highlighting the challenges of setting up pipelines and troubleshooting errors due to its dependence on plugins and manual configurations. Harness, on the other hand, is depicted as a modern alternative that streamlines the onboarding process, offering intuitive interfaces and automation capabilities that align better with contemporary cloud infrastructures. The platform's ability to simplify the creation of applications, services, environments, and workflows without the need for detailed Jenkinsfiles underscores its advantage in the evolving landscape of software development tools.