This document provides guidance on planning and designing a Microsoft Virtual Machine Manager (VMM) 2008 R2 infrastructure. It outlines a 7-step design flow that includes defining the project scope, determining whether to integrate with Operations Manager, sizing and placing servers, and designing network connections. The benefits of using this guide are that it provides an authoritative design that aligns business and IT needs, ensures a fault-tolerant and appropriately sized solution, and standardizes the planning process.