SEO is an acronym for Search Engine Optimization – a process of improving a web resource visibility and ranking by making changes to the resource itself, making it more search engine friendly.
The idea is simple – the easier it is to find your online resource in a search engine, the more visitors you have. SEO specialists know (or they think they know) the main principles that affect a web site ranking in search engines. Based on this information, they implement a number of changes to make sure the resource shows up more often to the target audience. SEO-focused changes not only increase the traffic volume, but also improve its quality by using the right keywords in the content.