The field of macromolecular engineering has grown very large indeed, too large to be covered in detail in a single book. This volume focuses on advances in one of the most important areas of polymer research today. The book is essentially divided into two parts that are interrelated in many respects, first examining starbranched polymers and then hyperbranched polymers. Information on new star polymers, hyperbranched polymers, dendritic polymers, and so on, is systematically provided. The strength of this book is in the design strategies that it offers for working with these important polymers, their characterization, properties, and application. The architecture and properties of dendrimers, starburst polymers, multi-arm star polymers, and comb polymers are discussed.