Structural response is the behavior of a physical structure when subjected to external actions such as applied loads, environmental conditions, or dynamic stimuli. This academic concept and research field investigates the resulting deformation, stress, strain, vibration, and potential failure modes by analyzing the interaction between applied forces, material properties, structural geometry, and boundary conditions, considering both static and dynamic effects. It is fundamental for the design, assessment, and prediction of structural performance, safety, and durability across various engineering disciplines.