Abstract: A client application includes a user interface for creating and editing complex interactions between IoT elements. Users choose from multiple IoT elements, where each element representing an IoT-enabled device or service. Users drag and drop selected IoT elements into a grid and couple them via one or more connectors. Users edit connectors and specify conditional requirements for some IoT devices to perform actions based on information sourced from other IoT devices. Users implement combinational logic by connecting multiple elements in different ways.