Other than On- page search engine optimization and Off- page search engine optimization there are another two types. Those are White Hat SEO and Black Hat SEO.
Outline About White Hat SEO :
White Hat SEO is a search engine strategy, which completely follows search engine rules and policies.
Such as, any search engine optimized website focuses on relevancy and organic ranking is considered to be optimized with White Hat SEO practices. There are many ways of white hat search engine optimization. Those are generating backlink, link building to improve link popularity, and writing content for human readers White Hat SEO is mainly utilized by those who intend to make a long-term investment on their Web site.