Google uses one of the most advanced crawlers to store, process, and fetch new pages from a website. It can work automatically or a user can trigger it while searching for new queries. Google uses various types of crawlers to fetch data from the internet. “Googlebots” is the main bot among the google crawlers. These bots are automatic to scan the data. Whereas, google updates the algorithm for data security and system integration security. To promote different products and services google uses several specialized bots.