Clean air is a requirement for life, and the quality of indoor air is a health determinant since people spend most of their daily time indoors.

The CROSSCON is a research project that targets developing research ideas into practical techniques and supporting prototypes, and the level of ambition is to validate results in lab conditions that are representative of a complex IoT system (i.e., technology readiness levels TRL 4 and TRL5).

Over the past decade, cloud services emerged as one of the most promising technologies in IT.