Black hat SEO refers to techniques and strategies to achieve high search ranking, and search engine breaks the rules. Black hat SEO only focuses on search engines and not so much of a human audience. Black hat SEO is usually used by those who are looking for a quick return to their site rather than a long-term investment on their site.
White hat refers to the use of SEO techniques and strategies that target human audiences in opposition to a search engine. Techniques that are commonly used in white hat SEO, they use keywords, and keyword analysis, research, rewrite meta tags so that more relevant, backlinking, link building, as well as humans for them Writing content can also be done for readers. People using white hat SEO hope to make a long-term investment on their website because the results run for a very long time.