ANATOMY OF A SEARCH ENGINE.

Information is vitally important to succeeding with search engine optimization (SEO).

1. QUERY INTERFACE:

• The query interface is what most people are familiar with, and it’s probably what comes to mind when you hear the term “search engine.” The query interface is the page that users see when they navigate to a search engine to enter a search term.
• The interface was a simple page with a search box and a button to activate the search. Today, many search engines on the Web have added much more personalized content in an attempt to capitalize on the real estate available to them.

For example:

• Yahoo! Search: allows users to personalize their pages with a free e-mail account, weather information, news, sports, and many other elements designed to make users want to return to that site to conduct their web searches.
• One other option users have for customizing the interfaces of their search engines is a capability like the one Google offers. The Google search engine has a customizable interface to which users can add different gadgets. These gadgets allow users to add features to their customized Google search home that meet their own personal needs or tastes.
• Google’s user interface offers the most ability for you to reach your target audience, because it does more than just optimize your site for search; if there is a useful tool or feature available on your site, you can allow users to have access to this tool or feature through the Application Programming Interface (API) made available by Google.   

2. CRAWLERS, SPIDERS, AND ROBOTS.
3. DATABASES
Every search engine contains or is connected to a system of databases, where data about each URL on the Web (collected by crawlers, spiders, or robots) is stored.