Business executives want to reduce the recurring costs of their application portfolios any way they can and use the savings to fund new business opportunities and counteract competitive threats. Conversations with Forrester clients through events, inquiry, and consulting are increasingly on the topic of mainframe migration. The catalyst for many of the conversations is a business executive advocating a sweep-the-floor platform migration to alleviate perceived high mainframe costs. Is mainframe migration a panacea for your organization or will it open Pandora's box? Use this framework to help you collect the information you need to make an objective decision.