The regional seminar "Information technologies in technical systems" was held on March 5-16, 2021 at the Novosibirsk State Technical University as part of the scientific session of NSTU. Due to the pandemic, the format of this seminar was mixed i.e. online and face-to-face. The seminar was attended by teachers, graduate students and undergraduates, the total number of participants - 53 people. Issues of SmartCity, Internet of Things, IT technologies were discussed. In particular, the following reports were presented: "Development of a parking space monitoring system for smart city technologies", "Research of means of using virtual reality technology", "Development of an intelligent control algorithm for automated systems", "Development of algorithmic and software for solving recommendation service problems in big data", "Study of the possibilities of using unmanned small-sized flying vehicles in agriculture", etc.