Webapp.io is a DevOps platform that streamlines web application development and testing processes. It uses intelligent file dependency tracking and Layerfiles to optimize build processes. The platform creates instant full-stack previews of applications, generates multiple copies for parallel testing, and provides auto-hibernating full-stack previews for every commit. It also offers pipeline management capabilities and seamless integration with source code management systems. Its features make it easy for teams to incorporate Webapp.io into their development workflows.