Which definition best describes the implementation service component within the implement phase?
A.
providing a step-by-step plan that details the installation and service-commission tasks required in order to create a controlled-implementation environment that emulates a customer network
B.
assessing the ability of site facilities to accommodate proposed infrastructure changes
C.
developing and executing proof-of-concept tests, validating high-level infrastructure design, and identifying any design enhancements
D.
installing, configuring, and integrating systems components based on an implementation plan developed in earlier phases
E.
improving a customer’s infrastructure security system