Decentralized finance and the traditional financial system both offer lending, trading, and asset management services. The similarity largely ends at the product description. The underlying structures — how participants are identified, how transactions are authorized, how risk is managed, and who bears it — diverge in ways that carry significant implications for regulation, access, and stability.

The most fundamental difference is intermediation. Traditional finance is built on institutions that stand between parties to a transaction, holding assets, processing orders, underwriting loans, and taking on counterparty risk in exchange for fees and regulatory compliance. A bank borrower is not a direct counterparty to a depositor; both are clients of an institution that intermediates. Even in securities trading, where buyers and sellers are nominally matched, brokers, exchanges, and clearinghouses layer between the transaction and its settlement. Each of those intermediaries is licensed, regulated, supervised, and legally accountable.