The book Function-oriented bioengineered skin equivalents -  continuous development towards complete skin replication aims to provide potential readers with a comprehensive summary of the available information on various in vitro skin models, from historical background to different modeling approaches and their applications. Particular emphasis is placed on presenting the current technological components available for the development of engineered skin equivalents by summarizing advances in cell cultivation, materials science, and bioengineering. Using examples of the current-state-of-art, we describe the advantages, limitations, and challenges of developing in vitro skin models for successful use in clinical applications and skin-related research.