The term "mobile optimization" refers to the process of enhancing a website or application to provide an optimal user experience on mobile devices. This involves adjusting the layout, functionality, and performance so that the content is accessible and easy to navigate on smaller screens. Key aspects include responsive design, faster loading times, and touch-friendly interfaces. Effective mobile optimization is crucial in today's digital landscape, as more users access the internet through mobile devices, impacting SEO rankings and user engagement.