Yoast SEO Premium v3.4 WordPress Seo Plugin (formerly known as WordPress SEO by Yoast Premium) adds several features to the Yoast SEO plugin. At the moment, the extra included functionality includes:
A redirect manager This allows you to create and manage redirects from within your WordPress install, allowing you to easily redirect old URLs to new ones, and solve common issues. This is especially powerful because of the combination with the Google Search Console (Webmaster Tools) integration. Built for scale, this redirect module can either handle the redirects for you or generate a redirect file that you can include in your Apache or NGINX server config. Read more
Multiple focus keywords With this feature, youll be able to optimize a post for two completely different terms, or for two synonyms. This means you no longer have to choose between terms youd like to rank for! Read more