Which digital marketing innovation helped the 'Living Building Challenge' certification gain mainstream recognition among architects and clients in 2019?

The integration of digital marketing and sustainable technologies has transformed architectural practice in recent years. Smart buildings with AI-driven climate control systems, IoT connectivity, and real-time energy monitoring have changed how architects approach environmental responsibility. This poll tests your knowledge about a revolutionary digital marketing campaign that changed public perception of sustainable architectural technologies.

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An augmented reality app allowing users to visualize real-time energy savings of certified buildings compared to conventional structures
A viral social media campaign featuring time-lapse videos of biodegradable building materials decomposing in controlled environments
A subscription-based platform offering architects monthly samples of new sustainable building materials with performance metrics
A blockchain-based verification system documenting the carbon footprint of materials used in architectural projects