The key dimensions of IoT measurement include connectivity, scalability, interoperability, data volume & velocity, security & privacy, intelligence & automation, and user adoption & impact.

The perception layer collects real-world data via sensors and actuators

The network layer securely transfers data between devices and the cloud

The processing layer analyses, filters and stores IoT data (edge, fog and cloud)

The application layer transforms data into actionable insights for end users

The security layer ensures cybersecurity, privacy and data protection

Knowing that it has future drawbacks that can be hacked as all my information is available, especially in smart homes

Dear Alshaimaa Gaber,

some of my figures will help you answer this question.

Best regards

Anatol Badach

See:

Intelligent IoT - Replicating human cognition in the Internet of Things

https://www.researchgate.net/publication/380376116

Fig. 1: Generelle logical multilayer architecture of the IoT

Fig. 2: Importance of Cloud Computing, Fog Computing and Edge Computing in the IoT

Fig. 3: IoT Computing Cooperation Matrix

https://www.researchgate.net/publication/377276570_SD-IoT_Software_Defined_Internet_of_Things

Fig. 2: General functional architecture of the IoT

Fig. 3: General multilayer model of the IoT based on ITU-T recommendation Y.2060