Concurrence represents an agreement from the stakeholder regarding requirement assets that are reviewed. In the case of the
Vision document these requirement artifacts would include the business problems and proposed solutions to those problems.
Obtaining agreement is crucial as it ensures the stakeholder and development team are on the same page. Concurrence can be
achieved through a number of techniques. The key point to note is that the ideal is to involve the stakeholder early and
often. The development organization must provide updates to the customer at regular intervals where functional code
may be demonstrated which resolves a specific need. Concurrence from the stakeholder must be obtained to ensure the team is
on track.