In the pure market making strategy, Hummingbot continually posts limit bid and ask offers on a market and waits for other market participants ("takers") to fill their orders.

Users can specify how far away ("spreads") from the mid price the bid and asks are, the order quantity, and how often prices should be updated (order cancels + new orders posted).

The diagram below illustrates how market making works. Hummingbot makes a market by placing buy and sell orders on a single exchange, specifying prices and sizes.

Figure 1: Hummingbot makes a market on an exchange

https://docs.hummingbot.io/assets/img/pure-mm.png