ENS (Ethereum Name Service): ENS is a decentralized domain name system built on the Ethereum blockchain. With ENS, users can register human-readable domain names that resolve to Ethereum addresses, simplifying the process of sending and receiving cryptocurrency. For instance, instead of typing out a long and complex Ethereum address, ENS enables users to send cryptocurrency to a shorter and more memorable domain name. ENS also provides other features, including the ability to map multiple Ethereum addresses to a single domain and the ability to associate metadata with a domain. ENS leverages the advantages of blockchain technology to provide a more user-friendly and decentralized method of transacting on the Ethereum network.