Chainlink has introduced the On-Chain Data Directory using the Ethereum Name Service (ENS) to enhance the decentralization and usability of its Price Reference Data Feeds within the DeFi ecosystem. This directory provides human-readable domain names for each Chainlink Price Feed, enabling users to identify and connect with the correct on-chain addresses more easily. By leveraging ENS, which offers a decentralized protocol for linking domain names to blockchain addresses, the directory allows seamless and censorship-resistant access to Chainlink's data. This integration supports enhanced discoverability, tracking of price feed updates, and ensures that smart contracts can interact with Chainlink Price Feeds in a secure and straightforward manner. The initiative aims to improve both the developer and user experience by offering transparency and ease of access, while also contributing to the overall decentralization of the Chainlink ecosystem.