If you what to know why search engine optimization is necessary first you have to understand what a SEO is meant for. SEO increases the quality or volume of traffic control to a website by different search engines. An SEO can target image search, video search, local search as well as industry specific vertical search engines that will give the website a web presence SEO works as an advertising media for your website. It will enable the search engine to tag your website for related searches that are made. The codes and data written in creating a website provide enough information to the search engine to categorize the website. Search engine optimization can attract many people to your sites who are searching for what your site offers. You can understand that they are looking for that topic for the words or phrases they have entered that is related to the content specified in your site.  Statistics say that users do not go beyond the first page of search results because of which it makes essential for every website to maintain its SEO in order to increase the visit count of their website. SEO makes the website noticeable for the search engines and construct their results accordingly. SEO is considered to be a popular internet marketing strategy as it understands the working of search engines and know exactly what the user searches for. Towards the end you can say that SEO can be a huge breakthrough for your site or company.