This document discusses different digital marketing techniques including SEO, SMM, PPC, and SMO. It provides definitions for each technique: SEO is changing a website's rank in search engines; SMO is promoting a business on social media; PPC is paying for advertising on search engines; and SMM is running ad campaigns on social media sites. The document also mentions that over 75% of consumers prefer mobile-friendly websites and that mobile searches have increased 500% in the past two years.