A DeFi staking platform allows users to lock their cryptocurrency assets in a decentralized network to support blockchain operations like transaction validation. In return, stakers earn rewards in the form of interest or additional tokens. These platforms facilitate decentralized staking, where users can directly interact with smart contracts and earn passive income. Popular DeFi staking platforms like Aave, Compound, and Yearn.finance offer competitive staking options, providing liquidity, enhancing network security, and boosting user engagement without traditional intermediaries.