“…e reusability metrics for each of these modules are defined as follows: In this section, we mapped the newly defined design quality metrics to the QoS factors taken from the ISO 9126 model [23] (defined for the quality assessment of computing systems and applications). e QoS factors selected for this purpose, from the works of [3,4,6,17,22], include complexity, functional suitability, performance, efficiency, compatibility, maintainability, portability, and usability. e metrics defined for design quality evaluation of IoT services are IoT design complexity metric, IoT transactional complexity metric, IoT transactional network load metric, IoT communication channel demand metric, IoT interoperability resolving network complexity metric, and IoTinteroperability resolving network load metric.…”