What is search engine and how it works?

Search engines work by crawling hundreds of billions of pages using their own web crawlers. These web crawlers are commonly referred to as search engine bots or spiders. A search engine navigates the web by downloading web pages and following links on these pages to discover new pages that have been made available.

For More Information Please Refer: https://www.deepcrawl.com/knowledge/technical-seo-library/how-do-search-engines-work/