This research project examines whether responsive web design is necessary for all websites. Through secondary research and interviews with industry professionals, the researcher tested various responsive design techniques and their usability across different devices. Key findings include that responsive design is preferred over mobile-specific design, content hierarchy is important, and further testing is needed to determine the best user experience across thousands of devices. The conclusion is that responsive design may not always be viable due to content or budget constraints, and is not required for every website.