Outsourcing - is (use of external sources, or means) a method enterprises activity optimisation at the expense of a concentration on the basic subject and transfers of not profile functions and corporate roles to the external specialised companies.

Outsourcing in IT services area allows to increase enterprises efficiency of functions fulfilment in the information technology area. Outsourcing practice helps the companies to solve functioning and development problems in market economy by reduction of costs, acceleration of adaptation to environmental conditions, improvement of production and services quality, risks reduction.

The customer-company can, using outsourcing of minor functions, to concentrate on what are peculiar to it, on the own specificity. Unlike the subcontract, outsourcing is a strategy of management by the company, instead of a partner interaction kind.

Outsourcing principle: «I keep to myself only that I can do better than others; I transmit to the external executor that it does better than others».

SEO – Search engine optimization 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. Typically, the earlier a site appears in the search results list, the more visitors it will receive from the search engine. SEO may target different kinds of search, including image search, local search, and industry-specific vertical search engines.

CMS – content management system is a computer application used to create, edit, manage, search and publish various kinds of digital media and electronic text.