This is a critical point in the Outsourcing Lifecycle, where the costs of the outsourcing initiative can begin to escalate. Shortcuts taken in the Architect Phase before this point will have an adverse impact on the success of the arrangement. The Select Building Block, and the prior Architect Phase, is when your organization is in its greatest position of influence. Should you enter the Outsourcing Lifecycle without having built up the best possible bargaining power prior to the Engage Phase, the bargaining power you have will often never exceed a moderate to low level, with commensurate degradation in all subsequent building blocks.