0x is an exchange infrastructure based on the peer-to-peer concepts for assets on the Ethereum blockchain. It was launched in 2016 by the ZeroEx Inc company that was co-founded by Will Warren and Amir Bandeali. According to the project's website, its mission is "creating a tokenized world where all value can flow freely".
The 0x infrastructure is based on the 0x protocol which is technically a set of smart contracts that allows for the exchange of assets on the Ethereum network. Users can also access a set of developer tools, that can be used to integrate with 0x, and a pool of shared liquidity. The 0x ecosystem consists of two positions: Makers, such as AMMs, that supply on-chain and off-chain liquidity, and Takers, such as Coinbase, that consume the supplied liquidity. ZRX is the governance token of the 0x infrastructure and is utilized as a reward for users settling transactions on the blockchain and hosting order books.
In 2021 0x began to expand into several L1 and L2 networks. In March of that year specifically, 0x went live on the Binance Smart Chain which allowed 0x API to support BSC and access the liquidity of platforms such as PancakeSwap and SushiSwap. 0x claims that such an expansion contributes to its mission.