What Is a DeFi App? From Wallet Connection to Lending Deposit

Wallet connection alone does not move funds; a DeFi lending deposit is a separate onchain transaction recorded by the protocol rather than the website that displays it. Because the position lives onchain, withdrawals remain subject to each protocol's rules and to the liquidity actually available in the pool. The distinction matters for users assessing counterparty and smart-contract risk, since a connected wallet can read balances without granting spending authority. What to watch next is whether interfaces make the approval-and-deposit steps explicit and how protocols communicate withdrawal conditions when pool liquidity tightens.