  Modern systems are increasingly connected and more integrated with other
existing systems, giving rise to \textit{systems-of-systems} (SoS). An SoS
consists of a set of independent, heterogeneous systems that interact to
provide new functionalities and accomplish global missions through emergent
behavior manifested at runtime. The distinctive characteristics of SoS, when
contrasted to traditional systems, pose significant research challenges within
Software Engineering. These challenges motivate the need for a paradigm shift
and the exploration of novel approaches for designing, developing, deploying,
and evolving these systems. The \textit{International Workshop on Software
Engineering for Systems-of-Systems} (SESoS) series started in 2013 to fill a
gap in scientific forums addressing SoS from the Software Engineering
perspective, becoming the first venue for this purpose. This article presents a
study aimed at outlining the evolution and future trajectory of Software
Engineering for SoS based on the examination of 57 papers spanning the 11
editions of the SESoS workshop (2013-2023). The study combined scoping review
and scientometric analysis methods to categorize and analyze the research
contributions concerning temporal and geographic distribution, topics of
interest, research methodologies employed, application domains, and research
impact. Based on such a comprehensive overview, this article discusses current
and future directions in Software Engineering for SoS.
