The significance of adopting a mobile-first approach in web design relates to the growing reliance on mobile devices for internet access. This strategy prioritizes the design and development of websites for mobile users, ensuring optimal performance and user experience across various devices. A mobile-first design improves loading times, simplifies navigation, and enhances overall accessibility. As more users browse the web via mobile, businesses prioritizing this approach will likely see higher engagement and retention rates, positioning them competitively in the digital landscape.