A key purpose in evaluating a firm's value chain when developing a global strategy is to determine

which internal company strategy will be used for foreign markets and which of those markets will the company conduct activities.

which industries will be the most competitive and in which markets according to Porter's Five Forces.

what markets and which products will be included in the global strategy to make sure all activities are performed.

which activities are kept internal, which activities will be external, and where the activities will be conducted.

when to promote selected products in the global strategy to best used internal and external company activities.