Underwater imaging, robotics, navigation, automation, and remote sensing are just a few of the many fields that use sensors today. Particularly important in the fields of smart agriculture and remote sensing are sensors that use cutting-edge approaches such as artificial intelligence (AI). By enabling the use of a wide range of sensor-based equipment and systems, the rise of the Internet of Things (IoT) has brought useful tools to the agricultural domain, and systems. Sensors enabled by artificial intelligence (AI) serve as intelligent sensors. With a focus on remote sensing and agricultural applications, this article offers a thorough analysis of the latest developments in smart sensors and the IoT. Some examples of these uses include drone deployment, crop monitoring, robot harvesting and weeding, and weather and soil quality evaluation. With a focus on specific types of sensors and sensor technologies, this study thoroughly analyzes, compares, and proposes improvements to the Internet of Things (IoT). The study’s authors hope that researchers, farmers, remote sensing experts, and policymakers would all benefit from the study’s findings, both in theory and in practice.