Thailand is switching to an economy that relies on knowledge and innovation, called Thailand 5.0. This change is really shaking up the hospitality and tourism industry. This article looks at how Smart Tourism—which uses tech, data, and eco-friendly ideas—is changing how tourism works in Thailand. Thailand 5.0 wants the country to be a top player in sustainable smart tourism. It focuses on bouncing back after the pandemic, protecting the environment, keeping Thai culture alive, and getting locals involved. This study looks at how Smart Tourism has changed over time and how it now uses digital platforms, apps, and AI. It also talks about the problems caused by not having enough infrastructure and by people having vastly different incomes. By checking out examples like smart hotels, eco-resorts, and the Smart City Campsite project, this research gives an inside look at what Thailand is doing to make its tourism better, improve things for tourists, and make sure everyone benefits financially. By mixing tech, sustainability, and Thai culture, Thailand 5.0 is creating a tourism plan that is open to everyone, works well, and can handle tough times.