Search engine optimization (SEO), a subset of search engine marketing, 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. Usually, the earlier a site is presented in the search results, or the higher it "ranks," the more searchers will visit that site. SEO can also target different kinds of search, including image search, local search, and industry-specific vertical search engines.

A typical Search Engine Results Page (SERP)

As a marketing strategy, SEO considers how search algorithms work and what people search for in order to increase a site's relevancy. SEO efforts may involve a site's coding, presentation, and structure, as well as fixing problems that could prevent search engine indexing programs from fully spidering a site. Other, more noticeable efforts may include adding unique content to a site, and making sure that the content is easily indexed by search engines and also appeals to human visitors.

The term SEO can also refer to "search engine optimizers," a term adopted by an industry of consultants who carry out optimization projects on behalf of clients, and by employees who perform SEO services in-house. Search engine optimizers may offer SEO as a stand-alone service or as a part of a broader marketing campaign. Because effective SEO depends upon the source code of a site, SEO tactics may be incorporated into web site development and design. The term "search engine friendly" describes designs, menus, content management systems and shopping carts that are easy to optimize.

Getting listings

The leading search engines, Google, Yahoo! and Microsoft, use crawlers to find pages for their algorithmic search results. Pages that are linked from other search engine indexed pages do not need to be submitted because they are found automatically. Some search engines, notably Yahoo!, operate a paid submission service that guarantee 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 SEOs and webmasters have expressed indignation at having to pay for Yahoo! organic search listings. Two major directories, the Yahoo Directory and the Open Directory Project both require manual submission and human editorial review. Google offers Google Sitemaps, for which an XML type feed can be created and submitted for free to ensure that all pages are found, especially pages that aren't discoverable by automatically following links

We at The DigitalSEO Provide you Seo Services which can help you gain permanent Backlinks, Search Engines rankings boost which can help you gain more free traffic which comes from the search engines.You can pay many dollars for advertising on search engines via Google Adwords, MSN Adcenter & Yahoo publisher network, but if you get a better SERP. your website get free traffic and your company can save a lot of money advertising every month.