Search engine optimization – Wikipedia

https://en.wikipedia.org/wiki/Search_engine_optimization

1.Search engine optimization (SEO) is the process of affecting the online 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. In general, the earlier (or higher ranked on the search results page).

2.Search engine optimization (SEO) is the process of optimizing your online content so that a search engine likes to show it as a top result for searches of a certain keyword.