Lido Staked Ether (stETH) is a liquid staking solution for Ethereum, allowing users to stake their ETH and receive stETH in return, which represents their staked ETH plus earned rewards.

When users stake their ETH through Lido, they receive stETH tokens that can be used in DeFi protocols while still earning staking rewards. The stETH tokens can be traded or utilized in various applications.

Lido enables users to stake ETH without locking it up, providing liquidity through stETH. It allows users to participate in staking while still being able to use their assets in the DeFi ecosystem.