I. Introduction
The Internet of Things (IoT) is propelling a paradigm shift in next-generation computing systems [1]. The IoT is rapidly becoming an essential element of applications across many domains, such as healthcare services, manufacturing industry, military domains, and transportation system, offering sensing, computation, and connectivity across a wide variety of smart devices [2]–[6]. The interest in IoT deployments continues to grow; the number of Internet-connected devices is projected to reach 24 billion by the end of 2020 [7].