Complex sentence: In these cases, it tends to refer to the overall structure of the system.In other words architecture is a coherent set of organizational principals and objectives guiding the design of each aspect of a complex structure.
Split into simpler sentences: In these cases, it tends to refer to the overall structure of the system. Common to both contexts is the idea that architecture embodies a coherent set of organizational principals and objectives guiding the design of each aspect of a complex structure.