  This paper presents the results of interviews conducted as part of the
DYNASOS project. The objective was to collect challenges related to the design,
implementation and management of system-of-systems (SoS) in the context of
climate adaptation and greening of smart cities. 23 individuals from cities,
academia, and industry were interviewed between March and May 2022 and 57
distinct challenges were collected and analyzed. Our results show that while
technical issues (such as interoperability or data acquisition) persist,
non-technical issues are the main obstacles. Difficulties in information
sharing, effective communication, and synchronization between different actors
are the most important challenges.
