Thompson provides a 'how to do it' manual for librarians on identifying, evaluating, selecting, configuring, customizing, implementing, and maintaining a web-scale discovery service that will provide access to a wide range of resources from one interface. She begins by profiling the four commercial contenders in this arena: EBSCO Discovery Service, Ex Libris’ Primo, ProQuest’s Summon, and OCLC’s WorldCat Discovery Service; this comparative evaluation is an outstanding feature of the text and can serve as a springboard before contacting vendors. . . .The text will be useful to any library faced with the dilemma of deciding which system best suits its needs; fortunately the small universe and the step-by-step considerations of this text make that task somewhat easy.