Subcontracting is one of the challenges modern software engineering must face. The need for decision models that guide software engineers in identifying when it is advisable and how to divide a contract, let alone, which risks it involves and which actions should be adopted to control them, is continuously increasing. Many researchers have proposed and experimented these decision models from various viewpoints. We feel the need for a method able to merge and formalize these experiences in order for them to be reused by the entire community.

This work presents an approach for formalizing such experience. It also proposes a decision model for dividing a contract according to its characteristics and to the cooperating organizations.

This decision model, together with others present in literature, have been integrated and formalized in an experience package.