SEO (from English Search Engine Optimization) - process of optimization of operation of search mechanisms which main goal is advance of the website in the first positions of delivery of results of search engines on certain requests.
Instruction
1. On the Internet a huge number of information provided on a set of various resources is concentrated. For simplification of problems of search of necessary content special search engines, such as Yandex, Google or Yahoo! work. They collect information on the websites and their contents, systematize it and direct the user requesting a certain combination of words to that resource where this request meets in the most optimal variant, and the maintenance of text content as much as possible corresponds to the text of request.
2. Initially search engines worked completely independently, without participation of editors of information resources. The search robot studied all contents of the page visible to the user, defined necessary regularities in the text, such as the most often found words and their combinations. On the basis of these data, tables of search indexation to which the system referred at each request of the user were formed, defined the most suitable result and issued on the page of search the list from several thousand results, at the same time first of all the results which are most precisely corresponding to the request entered by the user were displayed.
3. Such scheme of information processing is saved also till today, but the owners of resources directly interested in that the search engine redirected the user on their website got into gear on search engine optimization, and rival resources were visited in the last queue. On the one hand, such trend strongly simplified operation of search robots as in advance prepared list of requests on which the user could find the necessary content which is contained on any given page began to be offered them. However in fight for the first positions in results of delivery the relevance of information as the most optimized texts not always were the most substantial, useful and convenient for reading was lost. It became a push to continuous improvement of search mechanisms and increase in their so-called intellectuality. At the same time specialists in SEO doubled efforts in optimization of content, having separated it into two main types.
4. Internal optimization of the website consists in structuring content and its processing within one Internet resource. Its main objective - simplification of operation of search robots for what the keywords which are found in the text are used in certain proportions to other text, take place in a certain place of a text array and are the most relevant to contents of article. In an array of the keywords used for all website in general the accurate interrelation forming a semantic kernel began to be traced. Also there was a tendency to do articles referring at each other in one thematic category that increases convenience of the user during the work with a certain web resource.
5. The actions directed to increase in number and authoritativeness of other resources referring to the optimized website by means of links, press releases or registration in directories belong to external optimization of the website. External optimization is considered naboly the difficult and versatile instrument of advance as constant control not only behind parameters of own resource, but also assessment of parameters of other websites in which redirection of traffic on the optimized website trusts is necessary.