Internet search engines work like your research partners. When you enter your keywords into search engines like a query, their software performs a quick job and searches their already indexed pages and presents you in terms of results (SERP). The order of results pages is determined by search engine based on the relevance of keywords match.
Results will differ from different search engines because all search engines work based on their own algorithms. Algorithms are usually formulas used to determine where web pages should rank in their search engine results.
How Search Engine Works?
Search engines like Google and Yahoo uses three distinguish softwares to perform the whole exercises. They are known as Crawling Software, Indexing Software, and Resulting Software.
These three softwares are assigned a different task and performing on a collaborative manner.
It works to collect the links and URLs of all the different web pages. How crawling software gets informed for any new link or URL? It follows all the different web browsers (Microsoft explorer, Firefox, etc.) and looks for new links and URLs.
It also uses vast networks of servers and pulling back all the information back to their own server. This software is also known as spider or robot.
All the collected links and URLs then forwarded to another software called Indexing Software. Due to the crawling software, our web pages get informed to search engines and get fast indexing. That is how backlinks are more important for a web page.
This software follows the links and URLS and visits the entire web content. It collects all the data available on the pages. It stores every single word in their memory.
This software helps resulting software at the time of search queries.
This piece of software performs the ultimate job and that is results. When you enter the terms into search engines for search, the resulting software searches all the indexed pages to find the best possible exact match.
And, this piece of software presents you the whole list of results ranked on the basis of relevant matches for the query.
An Example Of Search And Results
Let’s say you have entered a term “dog food” in search engines and there is only three documents (web pages) matching your query.
The first document contains a word “dog” but does not contain word “food”.
The second document contains a word “food” but does not contain word “dog”.
The third document contains both words “dog” and “food”.
If these only three documents are the indexed pages then Resulting Software will rank #1 for the third document because this is more relevant to the query.