The order book contains all active buy and sell orders in real time.
It is made up of two important elements:
- Bid corresponds to buy orders. For example, on a BTC/EUR market, the Bid column represents all clients who have euros and want to buy BTC.
- Ask corresponds to sell orders. For example, in a BTC/EUR market, the Ask column represents all customers who have BTC and want to sell them for euros.
It enables a client to view the amount of orders in the order book and position himself in comparison with other buyers and sellers.