Search engine optimization (SEO) is the act of improving the quantity or quality of traffic to a web page or even a web page (as in a blog) from search engines like google and yahoo via "natural" or un-paid ("organic" or "algorithmic") search results versus other types of search engine marketing (SEM) which can deal with paid inclusion. The theory is that the earlier (or higher) a website appears within the search results list, the more site visitors it will obtain through the search engine. SEO might aim for different kinds of search, including image search, local search, video search and industry-specific vertical search engines. This gives a web site web presence.
As an Internet marketing stratagem, Search engine optimization considers how search engines like google and yahoo work in addition to what folks look for. Optimizing a web page primarily involves editing its content and HTML and associated coding to both boost its significance to specific key phrases and to eliminate obstacles to the indexing actions of search engines.
The acronym "SEO" can refer to "search engine optimizers," a expression adopted by an industry of consultants who take out optimization initiatives on behalf of customers, and by employees who execute Search engine optimization services in-house. Search engine optimizers may offer Search engine marketing as a stand-alone service or as a part of a broader marketing campaign. Since effective Search engine optimization may need changes to the HTML source code of a website, Search engine optimization tactics may be included into web site growth and design. The term "search engine friendly" might be used to describe web site designs, menus, content administration systems, imagery, movies, shopping carts, and additional elements that have been optimized intended for the point of search engine publicity.
An additional class of techniques, identified as black hat Search engine optimization or spamdexing, utilizes techniques such as link farms, keyword stuffing and article spinning that degrade mutually the relevance of search results and the user-experience of search engines. Search engines look for websites that utilize these strategies in order to remove them from their indices.
The primary search engines, such as Google and Yahoo!, employ crawlers to discover web pages for their algorithmic search results. Web pages that are linked from additional search engine indexed web pages do not require to be submitted since they are found robotically. A number of search engines, notably Yahoo!, function a paid submission service that guarantee crawling intended for either a set fee or cost per click. Such services usually promise inclusion in the database, but do not pledge specific ranking inside the search results.Two main directories, the Yahoo Directory and the Open Directory Project both demand physical submission and individual editorial review. Google offers Google Webmaster Tools, for which an XML Sitemap feed can be created and submitted for free to make certain that all internet pages are found, especially websites that are not discoverable through mechanically following links.