The order book is a list of buy and sell orders.
The order book is automated and updated in real-time. It matches the sell and buy orders when the criteria are meet. It helps users with the trading to see the demand and supply of the selected trading pair.
BID: The bid price represents the maximum price that a buyer is willing to pay for a crypto asset.
ASK: Represents the minimum price that a seller is willing to receive for a crypto asset..