SEO is the abbreviated form for Search Engine optimization and is related to the creation of webpage. It is very important for any website as it helps it to get a good ranking with the search engines. The webmaster that creates the page therefore needs to add certain elements in the page so that it is optimized efficiently so that the search engines can read it properly. HTML coding is used for creating these webpage and the coding needs to be added to it. If the webpage is optimized efficiently then the page is able to enjoy a good ranking with the search engine and help your webpage to get a good amount of traffic.
It is important for the website to enjoy a good ranking as this is how it is able to reach out to the target consumers and promote the website. So if you have a website and need to get good traffic at it then you need to get the webpage designed as per the SEO guideline. Hiring an SEO expert would be better as he would ensure the page is optimized. He would use certain keywords and phrases that can help your website to enjoy a good ranking and get better traffic.