Client-Server Basics

Summary

The client (app, browser) requests something, the server processes it and responds — the mental model behind almost every feature you'll ever spec.

• 1Diagram what happens when a user taps 'submit' on a form, from client to server and back.
• 2Learn where 'the frontend' and 'the backend' each live in this model.
• 3Understand why some bugs are client-side and others are server-side, and why that matters for triage.