How Does Search Engine Crawl Work?

What’s the process behind your Google search on how to cut hair yourself in quarantine?

How does a crawler work?

Crawlers pay special attention to new sites, dead links, and changes to existing sites, kind of like an ever-growing library.

Diagram on how crawlers take keywords from websites, upload onto servers, which is then available when you Google a keyword
Diagram on how crawlers take keywords from websites, upload onto servers, which is then available when you Google a keyword
Source Seobility (CC BY 4.0)

Why should crawlers matter to you?

A Generation Z kid studying sociology and searching for the Fortress of Solitude.