Variability (the ability of a software system or software artifact to be adapted for use in a specific context) is reflected in and facilitated through the software architecture. The Second International Workshop on Variability in Software Architecture (VARSA) was held in conjunction with the Joint 10th Working IEEE/IFIP Conference on Software Architecture & 6th European Conference on Software Architecture 2012 in Helsinki, Finland. The workshop aimed at exploring current and emerging methods, languages, notations, technologies and tools to model, implement, and manage variability in the software architecture. It featured one industrial talk, five research paper presentations, and three working group discussions. Working groups discussed topics that emerged during the workshop. This report summarizes the themes of the workshop and presents the results of the working group discussions.