A complete privacy DeFi system requires a five-layer architecture to work in coordination. The first is the private input layer, ensuring that data transmission is fully encrypted and not exposed. Next is the private state layer, encapsulating stored data to prevent tampering or eavesdropping. Then comes the confidential execution layer, which handles all computation logic in a securely isolated environment. These three layers build upon each other and form the foundation for creating truly private DeFi applications.