Web app design and development is the art and science of creating dynamic, interactive, and user-friendly applications that operate within web browsers. It involves a multifaceted process that encompasses both the visual design and the underlying functionality of web-based software. Design elements focus on creating an intuitive, aesthetically pleasing user interface (UI) that enhances the user experience. Development, on the other hand, deals with the programming, coding, and database integration necessary to bring the web app to life, ensuring its functionality, responsiveness, and security.