According to Chainalysis' recent study, decentralized exchanges (DEX) have increased dramatically since 2019, but the number of active exchanges – whether centralized or decentralized – has decreased within the same time period.DEXs have exploded in popularity, along with the exploding popularity of the DeFi (decentralized finance) sector as a whole.As far as i see Polkadex is the first project featuring an orderbook based exchange in the Polkadot ecosystem.As i like multi-chain solutions in current market i believe PDEX will be a lot better shape in near future.