Thanks for reply.

To achieve a better search engine ranking, we have to do SEO for our site.

Every person or businessmen want to grow his business for that he create a website so that he can grab opportunity from world wide, to grab those opportunity from world he needs seo, so website need seo.

Because SEO is a improve our website visibility

SEO aims to get high page rank on the SERP and all the business firm or any organization which have digital space over internet needs to be on top ten on the SERP for better performance thus there is lot of scope of SEO to optimize millions of website on the serp.

The majority of search engines users are more likely to click on one of the top 5 suggestions in the results pages, so to take advantage of this and gain visitors to your web site or customers to your online store you need to in the top positions.

SEO is absolutely necessary to remain relevant and searchable on the search engines.
SEO is useful to increase our website visibility.

Seo will helpful to improve your site performance.