The network of devices known as the Internet of Things (IoT) uses the stressed and Wi-Fi Internet to facilitate gadget-to-system (M2M) verbal exchange. IoT in agriculture is a present-day generation that can be used all 12 months round to boost agricultural output. The motive of this study is to offer an outline of IoT programs for agricultural automation within the agricultural zone, as well as to speak about the opportunities and constraints for developing IoT use. Based on historical information, the use of IoT in agriculture was classified, examined, and comparisons were made between the diverse sensors and communique technologies. The limits and future possibilities of IoT in agriculture have been tested in light of the analysis's findings. IoT has been considerably utilized in agriculture for self-sufficient machines, manipulating structures, monitoring systems, and management systems. Furthermore, IoT-based agriculture made use of the several Wi-Fi verbal exchange technologies utilized in agriculture, consisting of Wi-Fi, Bluetooth, ZigBee, and a lengthy-variety extensive region network (LoRaWAN), in addition to cell communication (e.g., 2G, 3G, and 4G). It is predicted that in the future, faster and more complete IoT technology could be used for quite a few agricultural activities with the improvement of different communication technologies, together with 5G. By boosting crop quality and productivity and cutting labour costs, IoT-based total agriculture with a communication system tailor-made to every farming environment may assist with agricultural automation.