This document discusses the challenges of overtourism and sustainable tourism development. It provides a history of sustainable development concepts and frameworks from the 1970s to present. It notes that while sustainability has been discussed for decades, progress has been too slow and overtourism is a consequence. The document examines causes of overtourism like increased travel affordability and seasonality. It also discusses managing tourism demand and supply through approaches like capacity limits, demarketing, and privileging local access. Finally, it argues for evidence-based management, stakeholder collaboration, and prioritizing resident well-being over business interests to regulate tourism development successfully.