What is SEO?
If you want to increase your website traffic, in turn leading to more possible sales and conversions, you're going to need to rank high in the SERPs (search engine results page). SEO is an organic way to get more visitors to your website. When a customer searches a keyword relating to your business you need to come up, its that simple.
Now Google, is the boss, and has robots crawl every page on the web for spam, boring content, and keyword stuffing. Google ranks websites based on how relevant the website is to the user search. In order for Google to rank you higher (or even at all) you must have a user friendly, responsive, optimized website along with using SEO tools to get users to your website.