Uploading a file feels simple. You click: 👉 Upload Select a file… And within seconds: 👉 It appears in the cloud. Google Drive. Dropbox. OneDrive. Everywhere. But behind that simple action… A lot of engineering is happening. Let’s break it down 👇 💡 Step 1: You Select a File It starts with something simple: Image Video PDF Document Your browser or app now reads the file from local storage. At this point: 👉 The file still exists only on your device. 📦 Step 2: File Gets Prepared Before uploading, the system often: Checks file size Validates file type Compresses data (sometimes) Splits large files into chunks Why chunking? Because uploading a huge file at once is risky. If upload fails at 99%… 💀 everything would restart. So systems upload in smaller parts. Smart move. 🌐 Step 3: Upload Request Starts Now your app sends a request to a server. Usually using: ```http id="yj4f4r" POST /upload Along with: * File data * Metadata * Authentication token Now the internet journey begins.…