Be aware that mobile SEO means different things on different search engines. On Google, Accelerated Mobile Pages and mobile-first indexing are the latest mobile-related updates that you should be aware of. On the Russian search engine Yandex, webpages are classed as mobile-friendly if they feature vertical rather than horizontal scrolling, and exclude Flash, Silverlight and Java applets. Finally, the Chinese search engine Baidu has launched its own version of AMPs called Mobile Index Pages, or MIPs. These get special icons in Baidu’s search results, encouraging higher click-through rates, so they’re worth doing.