Which revolutionary architectural product development was first introduced in the 1990s and led to a transformation in sustainable building design?

Test your knowledge about revolutionary architectural product developments that have transformed the industry! While architects have always been at the forefront of innovation, certain product breakthroughs have fundamentally changed how buildings are designed, constructed, and experienced. This question explores a significant milestone in sustainable architectural product development that has influenced modern design practices worldwide.

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LEED certification system
Aerogel insulation materials
Self-healing concrete
Electrochromic smart glass