Client vs Server

Summary

The client (browser/app) requests and displays data; the server stores data, runs business logic and responds to requests — understanding this split is core to web architecture. The boundary is not always fixed: modern applications can render on the server, hydrate in the browser, and move some work between environments depending on performance, security, and product requirements.

• 1Trace one feature (e.g. login) and identify what runs client-side vs server-side. Validate your understanding by applying it in a small practical example.
• 2Learn the difference between client-side and server-side rendering. Focus on understanding the underlying reason it works, not only memorizing the definition.
• 3Read about the request/response contract between frontend and backend teams.