What is Search Engine Optimisation??

well my understanding of Search Engine Optimisation would be getting a site to show up as quick as it can after i type in e.g Tourism, i normally look at the first ten sites that show up, so them sites have good Search Engine Optimisation. I typed in Search Engine Optimisation on Google as this is the search engine i always depend on when looking up definitions and ideas for college, i chose the first site that came up, it gave a definition of Search Engine Optimisation as, "Search engine optimization (SEO) is the process of improving the volume and quality of traffic to a web site from search engines via "natural" ("organic" or "algorithmic") search results for targeted keywords. Usually, the earlier a site is presented in the search results or the higher it "ranks", the more searchers will visit that site. SEO can also target different kinds of search, including image search, local search, and industry-specific vertical search engines." So yes the sites that come up on the first page are going to be the sites that will be looked at most by people all over the world. I guess Search Engine Optimisation is important to the site owners..