The purpose of this paper is to develop a general model for assessing the capabilities of organizations to collaborate on the provision of IT services. Especially, we focused on the relationship between the major units of IT departments or organizations that are called Development and Operations. We combined relevant theories in this area with empirical evidence to arrive at five capabilities and three maturity levels.  The capabilities and the maturity levels were organized as a matrix. The matrix was then filled with capability indicators based on both literature sources and empirical findings. The capability indicators serve as signs for having reached a certain maturity level in a given capability. The resulting model has been empirically tested and consolidated in several rounds with seven organizations.