This assignment delves into the concept of sustainable tourism development two decades after the Brundtland report. It explores various aspects, including smart tourism destinations, visitor attractions, online reviews, authenticity in heritage consumption, seasonality response, mobile tourism shopping, and park visitors' activities using geotagged photos. The assignment also touches upon social media research, value estimation of attractions, theme park carrying capacity, and the integration of sustainable development goals. It requires a critical review of research and an analysis of various frameworks and theories within the context of sustainable tourism business practices.