how to reverse engineer or get know about the technology being use by a website?

Question

Just for knowledge, I want to know about a site that what technology stack it is using in the product?

Like facebook, linkedin and other giants share tech stack they are using. Curious about learning systems.

Answer 1

Did you mean you want to know the different programming languages, servers and other technologies they use to develop their website?

If that is the case one way i know is to use the wappalyzer chrome extension. This gives you a list of the different technologies (like programming languages, servers used, the different analytics it uses, etc. )used to develop that website.