For mobile optimization in eCommerce, make sure your website has a responsive design that adapts to different screen sizes. Optimize your website's loading speed for mobile devices by compressing images, minimizing code, and using caching techniques. Implement a mobile-friendly navigation structure that is easy to use on smaller screens.  Ensure that buttons and links are large enough to be easily clickable on mobile devices. Additionally, leverage structured data markup, such as schema.org, to provide search engines with additional information about your products and improve visibility in mobile search results.