This analysis of how and why businesses buy outside legal services provides useful insights for businesses and law firms alike. In-house legal buyers at both Fortune 100 and new economy companies provide concrete examples of how some businesses have successfully and creatively restructured their in-house legal departments and their relationships with outside law firms. Included are many examples of firms that have successfully developed business and an examination of why other law firms fail at this important task. The subtle nuances that affect legal buying decisions and the impact of corporate globalization, law firm mergers, and the advent of multidisciplinary practice groups are also explored.