what is natural seo ?

what is natural seo ? friends tell me

Very up to date and done according to the google rules is called natural SEO.

The safe SEO according to the google rules is called natural SEO.

which techniques follow the google webmaster guideline that is called natural seo tips

"Organic SEO", also called "Natural SEO", is the most time consuming, and the most tedious method of optimization for placement and rankings. However, it is prone to longevity of results, as it has a focus on content, meta-tag enhancement using proper descriptions, keyword enhanced copy within the appropriate specified densities of the Search Engines, and link exchanges :)

In addition, keyword dense reports, articles, and other content materials are usually added in a routine fashion to a site to maintain the densities necessary and increase rankings and placement.

Search engine optimization (SEO) is the process of affecting the visibility of a website or a web page in a web search engine's unpaid results—often referred to as "natural", "organic", or "earned" results.