Foreword In her dissertation Anna Krzeminska deals with the determinants and the management of make-and-buy decisions. Make-and-buy describes the simultaneous use of in-house prod- tion and external procurement of a good or service. Today make-and-buy can be found in many industries and corporate sectors; the simultaneous use of in-house production and external procurement can, for example, be found in the automotive, telecommunications, and IT industry, as well as in pharmaceutical research-and-development projects, the assignment of sales representatives, and in franchising businesses....