In contrast to ordinary SEO, Mobile SEO is the process of ensuring that content displayed on any given webpage is optimised to be shown on smaller screens, such as mobile devices or tablets.
In order to optimise the performance of webpages on these devices, SEO marketers will look to make content as simple and fast to load as possible. They will also work to make the page more usable and mobile-friendly (for instance the user doesn’t have to move back and forth to view all the content), so that web users who access a certain webpage via their mobile device experience no frustration or friction when they are browsing.