Computer architecture refers to the design of the overall structure, functionality, and performance characteristics of a computer system, including its hardware and software components. It involves determining how different components of the computer should work together to perform various tasks.

Computer organization, on the other hand, focuses on the implementation of the computer architecture using specific technologies and techniques. It deals with how the computer's components are physically arranged and connected to one another, and how instructions and data are processed within the computer system. Computer organization is concerned with details such as the memory hierarchy, the instruction set architecture, and the input/output system.