What are façade systems in architectural design?

Façade systems in architectural design refer to the exterior layers of a building that are crafted not just for aesthetics but also for performance. These systems are critical because they form the first line of defense against weather and environmental factors, helping to regulate the climate inside the building, manage energy use, and contribute to the overall functionality.

Furthermore, façades serve to enhance the visual appeal of a building, often reflecting its architectural style and contextual fit within its surroundings. They may incorporate various materials and technologies that contribute to energy efficiency, insulation, and ventilation while also addressing factors like daylighting and privacy. This dual focus on aesthetics and performance is what distinguishes façade systems as integral to architectural design, making the provided choice the most accurate representation of their role.