All the DOM shows are just live orders and limit orders at each price level.. You first must know that the only reason the market even moves its because of buyers and sellers and there’s two types:
These are buyers/sellers who cross the spread and hit the ask/bid price.
They want to get filled immediately, so they use market buy/sell orders.
Example on DOM:
Best ask is 5000.25, best bid is 5000.00.
An aggressive buyer clicks “Buy Market” → instantly pays 5000.25 (ask).
Their aggression shows urgency and conviction → they are lifting offers.
These are buyers/sellers who place a bid/ask and wait.
They provide liquidity at the bid side/ask side of the DOM.
Example: Best bid is 5000.00.
A passive buyer places a limit order to buy at 4999.75.
They are waiting for sellers to come hit them.