Ventilation plays a key role in maintaining the indoor environmental quality of buildings. This contribution focuses on the significance of ventilation intensity as a crucial indicator of air quality within buildings. The aim is to analyze the impact of ventilation intensity on various aspects of the indoor environment, including thermal comfort, pollutant concentrations, and overall occupant comfort. The research is centered around methods for measuring ventilation intensity and ways to optimize this value to achieve optimal outcomes in the realm of air quality and comfort. Emphasis will be placed on technological innovations that enable more efficient and intelligent ventilation control, including the use of sensors, automation, and energy-efficient systems. The results of this study could have a significant impact on building design and operation, especially in the context of growing awareness of the importance of a healthy indoor environment and the need for energy efficiency. Ventilation intensity is becoming a pivotal factor in achieving these goals, and its analysis and optimization are essential for the future of sustainable buildings.