Search engine optimization (SEO) is the process of improving the visibility of a website or a web page in search engines via “natural” or unpaid (“organic” or “algorithmic”) search results. In general, the earlier (or higher classification on a search results page), and frequently a site appears in the list of search results, get more visitors from the search engine users. SEO may target different kinds of search, including image search, local search, video search, academic search, news search, and industry-specific vertical search engines.
The acronym “SEO” you can “search engine optimizers,” a term leads by an industry of consultants, the optimization projects on behalf of customers and employees who accepted conduct of SEO services in-house. Search engine optimizers may offer SEO as a stand-alone service or as part of a broader marketing campaign. Because effective SEO may require changes to the HTML source code of a website and website content, SEO tactics in website development and design integration. The term “search engine friendly” may be used to have site designs, menus, content management systems, images, videos, shopping carts and other items that have been optimized to describe the purpose of search engine exposure.
The leading search engines like Google, Yahoo! Search and Yahoo! use crawlers to pages for their algorithmic search results found. Pages indexed by search engines other pages are linked need not be provided because they are found automatically. Some search engines, especially Yahoo!, operate a paid submission service guarantee that crawling for either a set fee or cost per click. Such programs usually guarantee inclusion in the database, but do not guarantee specific ranking within the search results. Two major directories, the Yahoo Directory and call the Open Directory Project both manual submission and human editorial review. Google offers Google Webmaster Tools, for which an XML Sitemap feed can be created and submitted for free to ensure that all pages are found, especially pages that are not recognized by it can automatically following links.
Search engine crawlers may look at a number of different factors when crawling a site. The search engines index not every page. Removal of pages from the root directory of a web site can also be a factor in whether pages get crawled. In addition, search engines sometimes have problems with crawling sites with certain types of graphic content, flash files in Portable Document Format files and dynamic content.