Search engine optimization (SEO) is a set of strategies with the broad goal of bringing more people to your website the first way, by improving your search engine rankings. Search engine optimization or SEO in short, is a set of rules that can be followed by website (or blog) owners to optimize their websites for search engines and thus improve their search engine rankings. Social media optimization (SMO) can be one part of SEO—but it also contributes to all three ways people find you online. Obviously, SMO has to do with social networks and their growing importance to business. This aspect of optimization deals with enhancing your company’s presence and online reputation through interactive communities—not just Facebook and Twitter, but also blogs, forums, and anywhere your business is mentioned or linked to socially. Search engine marketing, or “SEM,” consists of cumulative efforts to promote a website in paid and organic search listings. SEM is a primary driver of business growth and customer acquisition for many ecommerce stores. The term "SEM" is used in varying applications. In some organizations, SEM refers exclusively to PPC (pay-per-click) paid search marketing (or even more specifically, Google AdWords). Other marketers use SEM as an umbrella term that describes all marketing efforts that influence performance in search engine listings, including organic results. A related term, "search marketing," can also be used to describe both paid and organic search.