HDX is used to power a DEX. The HDX token is used as a payment mechanism to reward those who support the exchange. The HDX DEX uses layer 2 to action swaps in DEX that reside inside a custodial wallet. There are people in this picture HDX is designed to be fast and unstoppable. The aim of the DEX is to make it possible for pairs to be swapped with other cryptocurrencies. A layer 2 swap using the lightning network and other L2 solutions has been used to get the pairs already available.
