A little more than a decade ago, internet became a very useful media of information and, with the passing of time, it kept exponentially growing and growing until it finally became what it is today: the most useful media to find information of about almost everything.
At the beginning, as it has happened with other great inventions, people didn't know how to use it but, little by little, more and more people were learning and discovering its usefulness, until the moment came when a large percentage of the population use this tool to learn about almost all topics.
Since there's a large amount of information on the web, there's also a need for a tool that allows us to manage these searches. These tools are called Search Engines. A search engine is a website that helps you to search for your information on the web.
Using a search engine is very simple, you only have to type a word or group of words in the space designed for this typing, click on their search button, and the search engine will do the rest: look for it on the web and then offer you a list of web pages that may have that information.
Search engines also allow us to perform a search, when required, in a more specialized way, by using the "advanced" option. The idea of using this advanced search option, is to obtain a smaller list of pages one that gets closer to our own needs.
Search engines work with huge databases that have information regarding the word or words that we are looking for.
There are a large number of search engines but to mention some
-Google
-Yahoo
-Altavista
-Netscape
-Lycos
-Bing
-AOL
-Hispavista
Search Engines wouldn't be able to respond at the speed that they are required to if they had to search every time in 100% of the pages that currently exist, so they each have a "basic list" to look from and change them periodically.
This is why companies need to do what it takes in order to get their pages indexed in this main list of search engines so that they are considered relevant and appear in the first places of the list of answers. In order to do so, you need to have the technical knowledge needed; If you don't have trained personnel for this job, we recommend you find a specialized agency. There are currently several interesting options so you can choose the one that best suits your needs.