Property management systems (PMSs) fundamentally have changed very little since the 1980s. And many hotels still use systems that were built in the eighties, nineties, or aughts. Since then, massive technology changes have occurred: the mobile revolution, cloud computing, distributed ledgers, AI-based large language models, Web 3.0, and other innovations have fundamentally changed both the technological capabilities of software, the way it is designed and built, and expectations for user experience.