Search Engine Optimization (or SEO) it's a strategic actions for the purpose of a raising of positions of a site in search engines by any search keywords. According to the statistic data, transitions to a site are carried out basically from search engines (Google, Yahoo!, Bing).
When the search engine will give out the sites from your search keyword, you will start to search for a suitable web resource from top to bottom, since the 1st page. It's simple logic! You will not get on to the 100th page thus, all web resources which take a low position in the search rating, remain without your attention.
The Big SEO Trends
To raise a site rating in the search engine — make site optimization. Work happens internal and external. External work is an advertising of a site on other web resources. You can do this work independently, but I recommend to entrust this action to professional link building agency, because, nonprofessional actions only will do much harm to your site.
For work on increase of relevance of a web site it's necessary to be able to trace any changes in work of search engines, to be able to analyze actions of competitors and in due time to react to any adverse moments. Therefore web site support by the skilled SEO-expert also is important. In the Search Engine Optimization there are no trifles for this reason each step is weighed and aimed at effective result.
Search engines cannot define, whether your site is necessary to people or has been created only for the purpose of earnings and commerce (various Pay Per Click Marketing Services, Pay Per Action/Registration, usual banner ads). However if to your site often refer links from external web resources, it's logical to assume that it useful and necessary web site. Thus, one of pacing factors at ranging of pages by a search engine is the analysis of deep links to any estimated web page.
Internal SEO. The searcher sorts the links by relevance (degree of conformity of inquiry and relevancy), thus the number of keywords on your web site directly influences a position in the search rating. Hence, it's necessary to take into consideration the given circumstance at creation of the main web page.
Modern Elements of the Web
Competent optimization begins till the moment of creation of a site. Experts form a semantic kernel — all words and word combinations on which the user should get on the site. It's are the same keywords, but in much bigger quantity and various variations. Only SEO positive limited experts can cope with this responsible task.
Process of ranging of web sites by search engine is carried out on certain algorithms by means of special services. Modern technologies allow to investigate the majority of elements of the web page: the text, the headings, special HTML-tags, style and structural features of a content. Thus considers internal factors of ranging: the number, density and an arrangement of keywords on pages, H1/H2/H3 title tags, alt image tags, meta-tags etc. Therefore for a correct web page a text and graphic content plays a considerable role. Regularly updated content of a resource says about constant progresses.