In a nutshell SEO will have your website showing higher up in Google search results.

Having more high quality SEO done on your website is the key ingredient to outranking your opponents on search engines, thus driving more potential clients to your website.

How often do you go to a second page on a Google search? The majority of search engine users are most likely to click on one of the top 5 suggestions in the first search results page (SERP). To take advantage of this and gain visitors to your website / online store, you need to appear in one of the top positions.

It all boils down to trust - users trust search engines. Having a presence in the top positions for the keywords the user is searching, increases the website's trust. SEO can put you ahead of the competition. If two websites offer the same service, the search engine optimized website is more likely to have more customers and make more sales.