Good software architecture is not only about choosing patterns or technologies. It is about understanding how boundaries, data structures, state management, and implementation choices influence a system as it grows. The course explores approaches such as modular front ends, unidirectional data flow, branded types, and well chosen data structures and shows how they can reduce coupling, prevent subtle errors, and make complex applications easier to understand and maintain. You will also learn how to evaluate architectural trade offs instead of introducing complexity simply because a technology or pattern is available.