How does a search engine work? Search engines are used when people ask questions and search for answers on the Internet. Search engine algorithms are computer programs that look for clues to provide the exact results that searchers are looking for. Search engines rely on algorithms to search web pages and determine the ranking of specific keywords. If you want to know more about search engine optimization, just like what seo for construction company do read more below. Search engines work in three stages. Crawl, discovery stage—indexing, which is the filing phase. The ranking is the search phase.

Step 1: Crawl

The first step is to crawl. Search engines send web crawlers to find new pages and record information about them. These web crawlers are sometimes referred to as “spiders” or “robots.” Their purpose is to discover new web pages and regularly check the content of previously visited pages to see if they have changed or updated. The search engine crawls your website by following the links you have already found. Therefore, if you have a blog post linked from the home page, when a search engine crawls the home page, it may look for another link and follow the link to the new blog post.

Step 2: Indexing

The second step is indexing. During indexing, search engines decide whether to use crawled content. When a crawled web page is considered valuable by a search engine, it is added to its index. This index will be used in the final ranking phase. Once a web page or part of the content is indexed, it is filed and stored in the database for later retrieval.

Step 3: Ranking

The last step is the most crucial step, which is ranking. Ranking can only be done after the crawl and indexing steps are complete. Therefore, when a search engine crawls your site and indexes it, you can rank your site.
There are over 200 ranking signals occur that search engines use to sort and rank content, all of which apply to the three pillars of SEO: technical optimization, on-page optimization, and off-page optimization.

Here are some examples of signals that search engines use to rank websites:
The presence of key words in the title, tags-whether keywords or synonyms appear on pages and label tags
Website Loading Speed ​​– Website loading is fast and mobile-friendly
Website Reputation – Whether the website of the topic you are searching for and the website are considered to have a good reputationsort and ranking results

Google’s main search algorithm, Google Hummingbird, determines how search engine results are sorted and ranked. Google also has a machine learning search.