In the Ensiro® project, the Wireless Sensor Applications Center of the Fraunhofer IIS in Coburg, together with industry partners, is developing demonstrators and applications in the field of environmental sensors. In doing so, various application scenarios are addressed in which environmental data is important, e.g. fine dust and air pollutants, indoor climate in offices and production facilities or personal weather information. Furthermore, the goal is to create a system that is modular at hardware and software level, with the help of which different environmental measurement values can be collected and easily integrated into an IoT platform, so that they can be made available individually for each target group. For this purpose, state-of-the-art technologies such as Cloud and Edge Computing as well as energy and range-optimized radio technologies are used.