Are you thinking of onshoring and insourcing work from external parties?
Several organisations I have spoken with over the last few weeks are. They also explained that they needed to change their mindset to how they now approach the management of these activities.
These changes are difficult; the success of the initial transition from an external party to your organisation will be dependent on how well the contract stipulates the vendor's obligations. Once the complete it will likely require the building of skills internally, management should avoid the temptation of "knowing it all".
Seek to lead as a facilitator, allow others to contribute creating scale and so your organisation can be in a constant state of transition, always evolving.