SEO features the strategy that companies use to make their website and themes more enticing to the search engines. The clients who use sites through this channel are spoken as basic and unprocessed traffic or SEO traffic. Even if nobody knows Google's exact algorithm, through careful study, the SEO profession.
Also, companies are able to see a variety of various factors that appear to affect the ranking of websites. Companies see these factors as something as an on-page SEO, meaning methods you implement on your own website, and another one which is an off-page SEO, involving the techniques you use off your main web.