Existing liquidity aggregators
Directing an order to a target area
Nebula aggregated order book
TRUE-AGGREGATED ORDER BOOK
Nebula aggregates all liquidity in one place offering you the best price, not just routing your order to one of the exchanges. You use one balance for all exchanges, so there is no need to pre-allocate funds between them.
The order book is a directory and directs your application to any exchange. You have to select a site in advance and manually. Thus, in reality, you do not have access to all the available liquidity at any time. You must also have sufficient funds on the selected site to execute the order.