This document provides an overview of indoor location and positioning technologies. It begins with an introduction of the author and his background. It then discusses why indoor positioning is important given that most time is spent indoors. It provides a quick tour of current indoor positioning approaches such as WiFi, beacons, light, sound, and magnetic fingerprints. It outlines some considerations for indoor positioning solutions around infrastructure, accuracy, total cost of ownership, and control. It explores applications and uses such as navigation, welcomes/pickups, in-store ads/rewards, asset tracking, and more. It then discusses how a company like Citi could utilize indoor positioning at bank branches and partner retail stores. Finally, it discusses issues to consider