What is SEO?
SEO stands for Search Engine Optimization, It's a process to make your website easy to be read by search engines. The more the website is following SEO best practice the higher rank it gets in search engines.
Having your website SEO Optimized will effect your business presence online, the higher ranked your website is, the more users will see it on the search results page. Thus, more visitors to your website. These visitors can then be converted into customers.