Reference Architecture for Lotus Notes / Domino Migrations

Comprehensive document about migration planning for the many organisations moving off of Lotus Notes Domino … 

This document presents a difference architecture process that creates a high-level reference architecture for a Lotus Domino to Microsoft technologies migration. You can use this document as a framework/reference point to build out a solution as you consider a migration from Lotus Domino technologies to Microsoft technologies. As part of the broader Microsoft Migration Planning Process, this material is used in the third and fourth phases of the Microsoft Migration Planning Process (formerly called the Application Analysis Envisioning Process or AAEP) with a goal of providing a standard set of components, tools, and design elements to be used during the envisioning and planning processes of a Lotus Domino migration.

Source: Microsoft.com