Along with company strengths and weaknesses, identify any actual or potential partners needed to pull the plan off. Note that collaborators are more than just a list of suppliers and distributors. Collaborators are those organizations, either upstream or downstream in the value chain, you need to partner with to cocreate value.
For example, AT&T collaborated with Apple to develop the iPhone. AT&T is downstream in the value chain, providing the needed cell service and additional features that made the iPhone so revolutionary. At the same time, however, AT&T was a part of the development of the iPhone and the attendant marketing strategy; the partnership began well before the iPhone was launched.