Is software engineering applicable when WebApps are built if so how might it be modified to accommodate the unique characteristics of WebApps?

Yes, software engineering principles are highly applicable when building WebApps. However, modifications are often necessary to accommodate their unique characteristics, such as the need for responsive design, cross-browser compatibility, and performance optimization. Agile methodologies and continuous integration/continuous deployment (CI/CD) practices are commonly adopted to ensure rapid iteration and deployment. Additionally, security and user experience become paramount due to the public-facing nature of WebApps, requiring specific strategies for testing and maintenance.