Search engine optimization also know as SEO, S.E.  is the process of improving the visibility of a website or a web page in search engines via the "natural" or un-paid "organic" or search results. Other forms of search engine marketing (SEM) target paid listings. In general, the earlier (or higher on the page), and more frequently a site appears in the search results list, the more visitors it will receive from the search engine. As an Internet marketing strategy, SEO considers how search engines work and what people search for. Optimizing a website may involve editing its content and HTML and associated coding to both increase its relevance to specific keywords and to remove barriers to the indexing activities of search engines. Promoting a site to increase the number of backlinks, or inbound links, is another SEO tactic.
ake advantage of that opportunity, it is vital to rank high in the search engines, to leverage social media and pay per click advertising, and to make sure your website turns visitors into leads and sales. If you don’t understand how to successfully apply these strategies, then your customers will go to your competitors instead.
Internet marketing plan around search engine optimization (SEO), pay per click advertising, social media marketing, conversion optimization and search-optimized Web design. Then, we tenaciously go to work so you can quickly dominate your online competition.

Some useful questions to ask an SEO include:

    * Can you show me examples of your previous work and share some success stories?
    * Do you follow the Google Webmaster Guidelines?
    * Do you offer any online marketing services or advice to complement your organic search business?
    * What kind of results do you expect to see, and in what timeframe? How do you measure your success?
    * What's your experience in my industry?
    * What's your experience in my country/city?
    * What's your experience developing international sites?
    * What are your most important SEO techniques?
    * How long have you been in business?
    * How can I expect to communicate with you? Will you share with me all the changes you make to my site, and provide detailed information about your recommendations and the reasoning behind them?
SEO is the active practice of optimizing a web site by improving internal and external aspects in order to increase the traffic the site receives from search engines. Firms that practice SEO can vary; some have a highly specialized focus, while others take a more broad and general approach. Optimizing a web site for search engines can require looking at so many unique elements that many practitioners of SEO (SEOs) consider themselves to be in the broad field of website optimization (since so many of those elements intertwine).
Website Optimizer, Google’s free website testing and optimization tool, allows you to increase the value of your existing websites and traffic without spending a cent. Using Website Optimizer to test and optimize site content and design, you can quickly and easily increase revenue and ROI whether you’re new to marketing or an expert.
Search engines including Google, specifically favor websites exhibiting higher levels of trust and authority. This trust is established based on the quality and volume of link popularity established for the website being judged. Link popularity is determined by the quality and volume of external websites linking to the website being judged. In addition to link popularity, age of a website and the domain name play a role in the rankings.
SEO may target different kinds of search, including image search, local search, video search and industry-specific vertical search engines. This gives a website web presence.
Social networks SEO facebook SEO, twitter SEO and other social networking sites are different seo techniques.