When considering an IT change that would enable a potential new line of business, the FIRST strategic step for IT governance would be to ensure agreement among the stakeholders regarding:

Objectives to achieve goals are derived from the vision, making them a subsequent step after establishing the vision.

Metrics to measure effectiveness are defined after objectives and goals are set, and the vision is clear.

For a strategic IT change enabling a new line of business, the very first step for IT governance is to ensure all stakeholders agree on a shared vision for the future state, as this overarching vision provides direction and context for all subsequent planning and objective setting.

A change response plan is an operational or tactical detail related to managing the change, not the initial strategic step of defining the change's purpose.