The term “Digital Twin” is increasingly used across industries, yet its meaning and practical value within GIS can often be unclear. This session demystifies Digital Twins in the context of GIS by clarifying what they are, what they are not, and how they differ from traditional maps and models. The presentation will highlight how Digital Twins are used to support monitoring, simulation, and decision‑making, and will connect the concept to real‑world applications across planning, infrastructure, facilities, and public sector operations.