Simply put, Web3 is the next generation of the internet. While the web as we know it (Web2) relies on central servers to store and transmit data, Web3 utilises decentralised technologies to create a more secure and transparent online ecosystem. It also goes beyond the read-write interactivity of Web3 to add a layer of ownership to users, who essentially hold power over their data and attention, opting to share it as they choose.
https://take3.io/web3-services/