This book focuses on sustainable development in the tourism industry by providing an understanding of sustainability solutions implementation in the tourism industry. It introduces sustainable development concepts and principles, then provides an explanation of how these can be applied for a sustainable tourism industry. The book provides fundamental knowledge with an intermediate level of implications to understand its practices in tourism sectors. It also provides discussion on potentials and constraints for further development in dynamic and rapid change in world tourism development, especially when it comes to an aging society, digital disruption, and the uncertainty of pandemic conditions and future changes.