SEO generally means Search Engine Optimizing. It refers to the technique of promoting a site for the targetted keywords and thereby driving traffic by making it easily searchable. It basically includes two techniques,viz.1. On-Page Optimization
2. Off-Page Optimization
It is the process of converting visitors to your site to your customers.
A SEO is a person who is assigned the work of optimizing sites. SEOs consider how search engines work and what exactly people search for. They keep in mind, both the aspects, one is client aspect, and the other is search engine aspect. He has to optimize the sites in such a way that both visitors as well as search engines are satisfied. A site should be built in such a way that it does not violate any of the policies of search engines. There are two ways to optimize a site:: organic and inorganic. Organic includes free listings and natural links, while inorganic includes making use of PPC (Paid-Per-Click) campaigns.
The worth of a SEO is evalued by the method “Conversion Rate”. It is the percentage of visitors who take a desired action, i.e., how often a visit is converted into a lead or converting visitors to clients.
There are several tools available on the internet for checking optimization of a site, as well as the tools that assist you in doing SEO wisely.
In short, SEO is a very powerful, online tool in making a site easily searchable by visitors and in making a site search engine friendly.