A search engine or search engine is an online system that allows users to search and retrieve information on the web. It uses algorithms and bots, also known as web spiders, to crawl and catalog web pages available on the Internet, allowing them to be indexed and made accessible to users.
When a user makes a query through a search engine, it uses its algorithms to analyze its index of indexed pages and offer relevant results related to the user’s query. These results are displayed to the user through a web browser, which is the software used to access the Internet.
In this context, SEO plays an important role in the visibility of a website in search engines, as it involves optimizing the content and structure of the site to improve its positioning in organic search results.