DeFi staking is a process in decentralized finance where users lock their crypto assets in a blockchain protocol to support network operations and earn rewards. Unlike traditional savings, staking does not rely on banks but uses smart contracts to automate and secure transactions. It is commonly used in proof-of-stake (PoS) and DeFi platforms to maintain network security, validate transactions, and provide liquidity. Key concepts include staking pools, validators, and yield generation. Users can stake individually or join pools to increase their earning potential. Benefits of DeFi staking include passive income, transparency, and full control over assets. However, it also involves risks such as market volatility and smart contract vulnerabilities, making research essential before participation.