DeFi staking platform allows users to earn passive income by locking up their digital assets in decentralized networks to support protocol security and operations. In return for staking their tokens, users receive rewards, often in the form of additional tokens or interest. These platforms typically operate on proof-of-stake (PoS) or delegated proof-of-stake (DPoS) blockchains, offering opportunities for investors to maximize their returns while contributing to the overall stability and decentralization of the blockchain ecosystem.