In a 2024 Forrester Wave™ evaluation, we researched, analyzed, and scored application modernization and migration service (AMMS) providers, presenting a clear set of global leaders. However, technology leaders must consider additional factors when making a final purchasing decision; for example, you are unlikely to find an ideal AMMS supplier that fully fits all your requirements. Moreover, a few different types of suppliers bring varying value propositions to the task of cloud migration and modernization. This report discusses the factors to consider when selecting an AMMS supplier.