Today, smart grid, smart water networks, smart monitoring system, high security are infrastructure systems that can connect different parts of the world more than we ever thought through the Internet of things (IoT). A wireless sensor network (WSN) consists of multiple sensor nodes for specific applications. WSNs feature easier deployment and better adaptability of devices. In recent time, gesture detection using RFID tags is one of the most important applications of wireless sensor network. The use of body sensors is one of the most developing and advancing technologies in IoT. In the healthcare system consisting of IoT, the patient is monitored using a collection of multiple, efficient and accurate low-power and lightweight wireless sensor nodes. To illustrate the advancement of IoT in enterprises, this study will review the trending research in the field of IoT. © 2021, Springer Nature Singapore Pte Ltd.