Web API
Domain: Internet & Web
🎯 Motivation
An API accessed over HTTP. The most common way for applications to communicate on the internet.
📋 Concrete Example
Web API: your app calls ‘GET https://api.weather.com/today?city=HongKong’. Returns JSON: {temp: 28, condition: sunny}. Your app uses this data to show weather. APIs connect applications.
🔗 Analogy
A web API is like a restaurant’s takeout window - you (application) ask for food (data) through the window (API). The kitchen (server) prepares it and hands it out. You do not need to go inside.