In this presentation, I will provide an overview of IonQ's architecture for fault-tolerant quantum computing which we call the walking cat architecture. The backbone of the architecture is a cat factory, producing cat states distributed throughout the machine, which are consumed to perform logical operations. The walking cat architecture is based entirely on a modern quantum error-correction approach called low-density parity-check (LDPC) codes and relies on hardware components that have been experimentally demonstrated on small devices. Based on this approach, we believe that a fault-tolerant quantum computer with hundreds of logical qubits capable of running millions of logical gates can be built in the near term, providing a platform to explore a broad range of applications.