'Responsive Design' is a web design approach where the layout and content of a website automatically adjust to the screen size and orientation of the device it is being viewed on. This design philosophy ensures that websites provide an optimal viewing experience across a wide range of devices, from desktops to smartphones.

Incorporating responsive design is essential in today’s multi-device environment. It enhances user experience, improves site accessibility, and is also a factor in search engine rankings.

Responsive design not only involves layout adjustments but also optimizing images, fonts, and other elements to suit different screen sizes. It ensures that users can easily navigate and interact with the website regardless of the device they are using, promoting accessibility and user satisfaction.