Off-Page SEO refers to techniques that can be used to improve the position of a website in the Search Engine Results Pages. It refers to all the items that are done "other than on your website", to improve search results and guide more traffic to your website.
Social Media Links eg Facebook, LinedIn, Twitter
External Links
Consistent NAP
Post comments on other blogs in your niche
Caching plugin in place
GZIP Compression
XML Sitemap file created and uploaded to root folder