Search engine optimization(SEO) is a combination of strategies, techniques and tactics used to increase the number of visitors to a website by obtaining a high-ranking placement in the search engine results page of a search engine (SERP) — including Google, Bing, Yahoo and other.
Search engine results pages (SERP) are web pages served to users when they search for something online using a search engine, such as Google. The user enters their search query and search algorithms query the world wide web against those queries and present result to SERP.
SEO is an online marketing practice focused on growing visibility of your business via organic (nonpaid) search engine results. SEO isn’t just about building search engine-friendly websites. It’s about making your site better for people too.
An important aspect of SEO is making your website easy for both users and search engine robots to understand. Although search engines have become advanced and sophisticated, they still can’t see and understand a web page the same way a human can. Implementation of best SEO practices on your website helps the engines figure out what each page is about, and how it may be useful for users.
Other reason includes but not limited to:
To sum up: