Digital transformation is taking place all over the world, people widely use the internet and other digital tools in their business and daily lives. Under the concept of Industry 4.0, smart devices that can connect to the internet and exchange data are also becoming widespread, this communication network is called the Internet of Things (IoT for short). IoT enables us to control all the objects in our environment online, as well as to process the data coming from them and to create smarter systems. IoT is considered as one of the most important areas of future technologies, it attracts great attention and is used in many industries. Taking instant data from the machines working in the production area, processing this data and optimizing the decisions with the support of artificial intelligence, transferring data between the devices, producing its own data for each device and transmitting it to the personnel are among the main benefits of this technology in the field of industrial production. This research article provides information about the definitions, formations, basic requirements, features of IoT technology, and also includes a literature review on technologies required in the delivery of IoT-based products and services, and IoT categories for enterprise applications used to increase customer value.