What Do Search Engines Do?

This article provides some general information about what search engines do and how they do it. It also includes general tips to improve your website's standing in the search results.

What do search engines do?

Search engines perform three basic tasks on websites. First, they "crawl" through websites to examine the content and links using automated "spiders". Second, they index websites:the spiders send the information they find to a huge data repository. Finally, they rank websites to determine which are most relevant to a search by using the information in the repository.

What Do Search Engines Do?

How you can improve crawling results

Here are some suggestions to maximize the benefit of crawling your website:

Design your site well. Place your most important pages close to the home page. Frequently update and add to your content. Revise and expand on your pages and add new posts. Fix any broken links, particularly internal links.

Indexing - Making sense of all that data

Just like the index at the back of a book helps readers find topics faster, a search engine index helps it find relevant results for a search. Instead of crawling the web each time, the search engine just needs to skim through a repository. Indexing doesn't happen instantly - there is a delay. So your website may not appear in the search results for a while, until it is indexed.

Relevancy ranking - Putting all that data to use

Now comes the final step, the entire point of this process - relevancy ranking. Here the search engine decides which websites are most relevant to a particular search term. Although the algorithm is different for each search engine and is a closely guarded secret, the overall concept is based on content and reputation.

Your reputation in the internet world is based on what other sites are linking to yours, and what sites you are linking to. Just like in the real world, you are judged partly on whom you hang out with. If your site is associated with credible and high-quality sites in your area, your site will be evaluated that way too.

Additionally, the content of your site itself should be high-quality. The search engines apply algorithms to evaluate the quality and relevancy of your site's content.

Here are some general criteria used for relevancy ranking:

Domain Trust- what types of sites you link to, and what sites link to you. If you link to quality sites and they link to you, your importance in the standings improves. If your links are spammy or low credibility, your rated relevancy decreases. Domain Authority - the overall number inbound and outbound links from your site. This includes not just the number of links to a particular page but also to the site as a whole. Additionally, the diversity of inbound links matters. It's better to have links from 100 different sites than the same number of links from 10 different sites. Keyword Usage - the density and placement of keywords on your web page.

As you can see, relevancy ranking has as much to do with other sites as your own. In order to maximize your relevancy ranking, you have to provide quality content and obtain links from other quality sites. Relevancy rank depends both on your site and links from others. Fortunately, there are specific things you can do in both areas to maximize your website's standing in the search results.

What Do Search Engines Do?
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