**Trading operation on Binance (in short):**

1. **Place an order** – User selects crypto pair (e.g., BTC/USDT) and places a **buy** or **sell** order.

2. **Order matching** – Binance’s system matches it with the best available counter-order.

3. **Trade executed** – Once matched, the trade is completed instantly.

4. **Balance updated** – The user's wallet reflects the new asset amount.

5. **Trading fee** – A small fee is deducted per trade (often less with BNB).

**In short**: Users place orders, Binance matches them, executes trades, and updates balances—all automatically and in real-time.