Depending on your company, there are more or fewer activities you can do in-house: method development can be outsourced, for example, as can formulation, stability, and process development.
Clinical manufacturing is typically outsourced and in anticipation of the commercial stage, a commercial CMO needs to be identified in time.
At 3D-PharmXchange, we have a network of trusted C(D)MOs and we have helped many clients work on requests for proposals from C(D)MOs, assessed and compared responses, and given advice on the choice.
Once a partner organization is picked, 3D-PharmXchange has significant experience with the tech transfer of an existing process to a partner and subsequently (daily) management of further work.