Client-Server Architecture
Client-Server Architecture is fundamental building block of the web
The architecture works on a request-response model. The client sends the request to the server for information & the server responds with it
Every website you browse, be it a Wordpress blog or a web application like Facebook, Twitter or your banking app is built on the client-server architecture
A very small percent of the business websites and applications use the peer to peer architecture, which is different from the client-server