The Search for Extraterrestrial Intelligence (SETI) is aimed at confirming the presence of technological civilizations (also known as the search for techno-signatures) beyond the Solar system. Due to supercomputer development, machine learning algorithms, recently discovered exoplanets suitable to host liquid water and state-of-the-art technology, the SETI program is nowadays considered a strongly growing search field in astronomy. Five years after the last INAF SETI meeting (2019), organized in Rome with the endorsement of esteemed INAF President Prof. Nichi D’Amico (who passed away in Sept. 2020), it will be organized in October 2024 the third INAF SETI meeting that will be held at the Teatro Doglio in Cagliari. 

Through the different sessions, we will discuss the suitable physical and chemical conditions for life birth and development that can lead to an intelligent and technological society able to release electromagnetic signatures in space as today humankind does. The SETI observational techniques will be faced along with the state of the art of the available technology. This search program is based on observations in the radio (and optical) band (Cocconi & Morrison 1959) because Earth’s atmosphere is relatively transparent at many radio (and optical) wavelengths, and narrow-band radio signals undergo small variations through the interstellar medium. As Cocconi and Morrison stated, “The probability of success is difficult to estimate, but if we never search the chance of success is zero”. The eventual detection of an alien radio signal could represent a most important discovery for all humankind, both from a scientific and humanistic point of view. 

Important Dates