State Machine Architecture

State machine architecture is a design pattern where a system is modeled as a set of states and transitions triggered by inputs. In the context of smart contracts, the protocol is defined by its current state, and every transaction is a state transition that follows a predefined set of rules.

This makes the protocol's behavior highly structured and predictable. It allows developers to map out all possible states, ensuring that there are no undefined or dangerous states that the system could enter.

This architecture is ideal for complex protocols like decentralized exchanges or derivative platforms, where managing state is the primary challenge. By adhering to this model, developers can build systems that are easier to audit, test, and reason about.

It is a powerful framework for ensuring the long-term stability and security of programmable money.