This book helps practicing evaluators design and conduct competent evaluation studies, while explicitly considering resource and data constraints. The book is organized around a six-step model developed by the authors, and which has been tested and refined in workshops that cater to a broad spectrum of evaluation practitioners. Vignettes from practice and case studies, representing evaluations from a variety of geographic regions and sectors, demonstrate adaptive possibilities for small projects with budgets of a few thousand dollars, or timelines as brief as a few days, to large-scale, long-term evaluations with multi-million-dollar budgets. The text is specifically designed to incorporate quantitative, qualitative, and mixed-method designs.