The IoT permits interconnection between physical and virtual smart devices through the Internet. The IoT devices are generally tiny in size and have low power with limited processing capabilities. The devices sense the environmental-related information and forward the sensed information to further processing via gateways. The IoT is a standalone system, whereas it is easily built with conventional technologies to offer various kinds of services. The IoT extends the conventional technologies like wireless sensor networks and radio frequency identification with restricted interoperability to meet the application-specific requirements. The IoT permits communication among smart devices directly or through relay devices. The burgeoning IoT technology provides different novel solutions in diverse IoT applications. Some prime IoT applications are smart agriculture, smart grids, smart industries, smart homes, smart vehicular systems, and smart cities. The Ph.D. proposal in IoT comprises novel ideas in diverse IoT platforms like routing, security, privacy, and application-specific requirements. The IoT is a vast technology that not only assists in tangible individual development, also plays a significant role in growing the economical status of the country. It has more future directions and paves multiple opportunities to the researchers.