The Internet of Things (IoT) is growing exponentially. Government, businesses, and individuals all rely on technology and devices to improve efficiently, increase security, and improve daily life. For consumers, these benefits are largely realized in two verticals: home and auto IoT. In both verticals, interoperability and open source are key components of the value of IoT. This report examines the home and auto IoT markets and the role of interoperability in capturing the full potential benefit of these devices.