The buzz around the Internet of Things (IoT) is at fever pitch across the tech community. Many companies that are not traditionally involved in the world of sensors and machine-to-machine (M2M) communications are confused about how to proceed. Decisions around if, when, and how to build a business case for incorporating smart devices, sensor data, and analytics are often delayed because the very "things" that make up the IoT use different communication protocols, messaging formats, and data models. This brief provides an initial look at IoT interoperability, judging how important it will be to the adoption and business value of the IoT, and how it will be achieved.