Application of digital twins in industrial production
technologies continue to appear, and digital twins are one of them. Being a completely new interactive technology, digital twin technology can handle the interaction between the real and virtual world well. They are integrated with other technologies and are used in many areas, such as smart factories in industrial production, a digital model of life in medicine, the construction of smart cities, security guarantees in the aerospace sector, shopping in the commercial sphere and so on. The purpose of this article is to provide an opportunity to understand the status of the use of digital twin technology. At the same time, the introduction of basic technologies related to digital twins is interspersed with the introduction of applications.