Sui is an Ethereum name service that allows users to register and manage human-readable names on the Ethereum blockchain. The use cases for Sui include:

Easily remembering and sharing Ethereum addresses: Sui names are shorter and more memorable than traditional Ethereum addresses, making it easier to send and receive payments.

Decentralized identity: Sui names can be used to represent a person, business, or other entity on the Ethereum blockchain, serving as a decentralized form of identity.

Building decentralized applications: Developers can use Sui names in their dApps to make it easier for users to interact with smart contracts and other blockchain-based resources.

Domain fronting: Sui names can be used to bypass censorship and access blocked content by disguising the true destination of traffic behind a benign-looking Sui name.