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Back to Search Engine Basics: How Search Engines Work (Requests & Ranking)
Step 3: Processing of Requests – When an internet user types in a word or phrase the search engines receive a request to find matching results for that given keyword or phrase. To be able to process the request the search engine checks its index and comes up with the documents or pages that contain the given search term. The tricky part though in coming up with the list of results is determining if the term is used on the web page in the way the user wants it. In other words, is the term relevant or not? If the term is too generic and has lots of different meanings or context the search engine will return more results. If the search term is more specific then there will be less results returned. This is why it is important that both generic and more specific keywords and phrases be found on your web pages. Without the keywords the search engines will automatically exclude your web page from the final list of results. Once the full list of possibly relevant results are determined the search engine then has one last step to perform…
Step 4: Ranking the Results – Search engines can return anything from zero pages to millions of pages, depending on the popularity of topic. Of course, no one really has the time to scan millions of results to find which one contains the information he/she needs, which is why search engines do the scanning and picking for us. Using an algorithm based on multiple factors search engines determine which of the results are most relevant and rank them accordingly. The results that search engines deem to be most relevant are displayed among the top results and the least relegated to the last pages, which no one almost ever looks at. This is where SEO is most important. Various SEO strategies are implemented to ensure a good placement in SERPs.
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