BE is on servers, where is FE?

Frontend (FE) is usually located on the client side, that is, in the user's browser or in a mobile application. Web pages written in HTML, CSS, and JavaScript are loaded from servers and executed on the user's device, providing interactivity and visual display.

In some cases, FE can be hosted on a CDN (Content Delivery Network) to speed up the delivery of static resources, but in fact, the FE code is executed on the client device.