DEX — decentralized cryptocurrency exchanges. Unlike centralized exchanges, DEX exist as a distributed ledger, does not collect or store user information, but only find and give out matches between requests for buying and selling of digital assets. There are both on-chain solutions and second-level solutions.
Due to the fact that decentralized exchanges do not have a centralized server, and management is distributed among the nodes, DEX provides advantages such as lower costs of maintaining the exchange. However, DEX tends to have a more modest set of exchange-traded instruments compared to centralized solutions.
The cost of the DEX commission directly depends on the cost of gas in the network.