The document discusses the evolution of web design from the Web 1.0 era, characterized by simple, text-based sites with limited technology, to the Web 2.0 era, which emphasizes interactivity and user engagement through advanced technologies like AJAX. It illustrates how web designers have transitioned from basic design to creating more dynamic, responsive websites that meet modern user needs. Web designers must now continuously adapt and learn new technologies to succeed in this rapidly changing landscape.