The Build Solution and Sustain Engagement process flows involve execution activities, to build elements of the solution, and to monitor what is going on as well as embed control throughout.

The Enterprise Change Director and Enterprise Change Board members will ensure enterprise wide co-ordinated activities which deliver results in a progressive and planned way.

At this level the timescales are long and deadlines, targets and deliverables will be worked to, against a backdrop of considerable ambiguity. This requires that assurance activities are carried out on a regular basis, to underpin monitoring and exercising control.

The Change Approach may also be updated from time to time, to take marketplace and environmental changes and their impacts on the change initiative.

At all times and in all cases, the Enterprise Change Business Case is revisited to ensure the focus on business justification is maintained.