How search engine works?

When we search for something on a search engine, like Google, we expect to get relevant and accurate results in a matter of seconds. But have you ever wondered how search engines are able to provide us with such fast and precise results? The answer is through a process called crawling and indexing.

Crawling is the process by which search engines discover new and updated pages on the internet. Search engines use special software called spiders or crawlers to scan the internet and follow links from one website to another. As the spider visits a website, it scans the HTML code and stores a copy of the page in its database. The spider then follows any links on the page to other pages within the same website or to other websites, and the process repeats itself. This process allows search engines to discover new pages on the internet and to keep their databases updated with the latest content.

Once a search engine has discovered and indexed a page, it uses a complex algorithm to determine the relevance and importance of the page. The algorithm takes into account several factors such as the content of the page, the number and quality of links pointing to the page, and the overall structure and design of the website. The algorithm also considers the user’s search query and the context in which the query was made.

After the algorithm has determined the relevance and importance of a page, it assigns a ranking to the page and adds it to the search engine's index. The index is a database of all the pages that have been discovered and indexed by the search engine. When a user performs a search, the search engine looks at its index to find all the pages that are relevant to the user's query. It then orders the results by ranking and returns the most relevant results to the user.

However, it's not just the content of the page, but also the backlinks that are considered in the ranking algorithm. Backlinks are links from other websites that point to your website. The more backlinks your website has, the higher the chances of your website ranking higher in the SERPs. Search engines use backlinks as a measure of the popularity and authority of a website. A website with many high-quality backlinks is considered to be more trustworthy and credible than a website with few or low-quality backlinks.

Search engines also use meta tags to understand the content of a webpage. Meta tags are HTML tags that provide metadata about the webpage, such as its title, description, and keywords. The title tag and the description tag are used to create the title and description that appear in the SERPs. The keywords tag is used to indicate the main keywords or phrases that the webpage is optimized for.

It's also important to note that search engines are constantly updating their algorithms and introducing new ranking factors. This means that SEO is not a one-time activity and requires continuous monitoring and optimization. Websites that fail to keep up with these changes may see a decline in their search engine rankings.

In conclusion, search engines work by crawling the internet, discovering new and updated pages, indexing them and then ranking them based on their relevance and importance to the user's query, considering the content, backlinks, meta tags and other factors. SEO is a continuous process and it's important to keep up to date with the latest trends and algorithm updates from search engines to ensure that your website continues to rank well in the SERPs.