Inquiries from Forrester clients clearly indicate that Agile adoption is in an early stage. Questions from our clients point to challenges crafting a concrete understanding of the specific benefits and costs Agile would bring to their organizations. The questions users are asking take many forms, but one tactical question (Is Agile right for my project?) and one strategic question (Is there any concrete evidence that Agile benefits justify a major overhaul of software development?) top the list. For vendors that help Agile development teams with tools or consulting, these concerns need to factor into the development of tools, training materials, and consulting.