0x is an innovative protocol designed for decentralised exchange on the Ethereum blockchain. It was conceptualised by Will Warren and Amir Bandeali and was officially introduced in February 2017. At its core, 0x facilitates low-friction, peer-to-peer trading of ERC20 tokens without the need for a centralised exchange. It relies on Ethereum smart contracts that are free to use and accessible to anyone, facilitating interoperability between various Decentralised Applications (dApps) that offer exchange services. A distinguishing feature of 0x is its decentralised governance model, which oversees protocol updates and maintains alignment within the ecosystem. By serving as a common infrastructure, 0x aims to create network effects that enhance liquidity and streamline the user experience across different applications.