search engine optimization?

It's important to look at both on-site and off-site SEO to get the rankings you are after. Sites should be built in such a way that search engines notice quickly what your site is about through correct usage of metadata, titles, headings and keywords and you should actively promote your site on other web sites using off-site SEO techniques.

it a way to optimize your website ,so if somebody type our doamin name in any search engine ,they can easily see it in front page,if you done search engine optinization

Search Engine Optimisation involves configuring your website to appear higher in search results for a particular keyword. There are lots of different aspects to SEO and SEO is constantly changing and evolving. There is both white and black hat SEO, white being legal SEO techniques and black being illegal techniques.