The term "Software Architecture" refers to the overall structure of software and how that software provides for a system's conceptual integrity as well as its overall functionality. Software architecture is how a system is built. It defines how the different components of a system (which could be hardware or software) interact with each other and how they relate to the rest of the world. Software architecture is important because it makes sure that all of these parts are working together in a way that makes sense and helps ensure that all parts can be easily understood by people who may not know much about software development.