This volume contains two Open Access Chapters.   Volume 64 of Research in the Sociology of Organizations takes stock of research on processes of inter-organizational collaboration and explores new topics that call for inquiry. It shows that inter-organizational collaboration is becoming more varied and fluid. Traditional strategic alliances and consortia are still around, but these are complemented with new forms of collaboration, often enabled by emerging digital technologies.  The volume is organized in three parts. The first set of chapters focus on relational dynamics of...