Digital Twins (DTs) are quickly gaining traction in the Architecture, Engineering, Construction, and Operations (AECO) industry. DTs are associated with smart operations and maintenance in facilities management because they create the ability to interact virtually with all physical smart devices. DTs allow us to integrate in a physical environment data and information on what is happening in that environment thus converting that physical environment into a virtual one, that can be used in real-time, or in aggregate, to facilitate the analyses of physical spaces. In the AECO industry, the focus on DTs has increased due to the proliferation of digitalization and integration processes. For example, there has been a marked growth in the development of Building Information Modeling (BIM), but while BIM has instigated the digitalization and integration of design and construction information, its utility for smart decision-making in the operations and maintenance (O&M) phase is limited as the data and information captured in BIM outputs are static. Consequently, the need for technology that enables dynamic optimization of BIM data and operational data has grown. DTs have shown early promise in the AECO industry to elevate BIM from static to actionable and dynamic virtual models and enhance facilities and asset management (FAM) functions.