Which IT management action is most likely to produce long-term improvement in IT service delivery and customer value?

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An organization is undergoing a digital transformation. One of their objectives is to increase customer engagement through the new digital services. Senior management believes the IT department is not evolving fast enough to deliver on the new organizational vision. Which IT management action is most likely to produce long-term improvement in IT service delivery and customer value?
OPTIONS

Implement a training program to clarify the organization’s digital transformation objectives and how this impacts staff jobs and roles
Complete a staff skills assessment to identify where the organization is lacking the digital skills required for successful delivery
Work to establish a culture of continual improvement that includes strong governance
Complete a process inventory and identify those that are most likely to be contributing to poor performance for improvement efforts