The 4th Cyber-Physical Systems Society of Iran (CPSSI) International Symposium on Real-Time and Embedded Systems and Technologies (RTEST) will be held on May 30-31, 2022 at Iran University of Science and Technology (IUST), Tehran, Iran. RTEST 2022 invites papers presenting design, implementation and verification of real-time embedded technologies and cyber physical systems in the following tracks:

• Cyber-Physical Systems (CPS)

• Internet-of-Things (IoT)

• Embedded Software and Hardware

RTEST provides an environment to present the last achievements of the researchers covering all aspects of theoretical and practical areas, reporting design, analysis, implementation, evaluation, and empirical results, of real-time and embedded systems, IoT, and CPS.