The communities of software architecture and software product lines have always been close content-wise and have a long tradition of collaboration. In this panel we want to build on this tradition to further discuss common ground between ECSA and SPLC researchers for potential joint work. We will emphasize what each community can offer to the other and what it can expect to receive in return. We hope to inspire attendees regarding both the topics as well as the people for potential collaboration taking advantage of the two conferences’ collocation.