What are "guards" and why are they needed?

Question

Laravel

I read the docks several times, but I still didn’t understand why they are needed and how to work with them. I would be happy if you can explain

Answer 1

"Guards", "guards", "guards". These are essentially user authentication rules - in which parts of the request to store information that this request comes from an authenticated user. For example, this can be done in the session / cookies, or in some token, which must be contained in each request.In Laravel, these are session and token guards, respectively"