sing the key words "new service development" or "NSD" on online databases ScienceDirect and EBSCOhost has been performed to cover a broad range of high-quality, peer- reviewed publications. The review time period was from 1997 to 2008 as NSD research received significant attention during this time (Zhou and Tan, 2008). The initial search returned over 300 articles. Accounting for duplicate results and after a preliminary scan of the article's abstracts the number of articles to be included could be substantially reduced. Reasons for excluding articles where, among others, a different understanding of e-service that related more to information system adoption or articles that refer to NSD literature or use NSD methods but do not contribute to extend NSD research itself. Moreover, several cross-referenced articles and books not found in those databases have been included and further extended by a comprehensive review of relevant academic journals that we expected to have published articles on NSD. Finally, 42 relevant journal and conference articles as Service Innovation for Electronic Services Table 7.1 Overview of Topics Covered in the Analyzed Articles NSD Research Theme Frequency Types of innovation Antecedents/success factors Process models/methods Generic (literature reviews) well as books and book chapters have been included in the review. The literature on NSD focuses mainly on success factors and the development of (process) models (Zhou and Tan, 2008) as well as a large set of summary and review-based articles. The topics covered in the analysis and the number of articles that predominantly deal with this topic are shown in Table 7.1. A similar distribution of main themes covered in NSD research has also been reported by Zhou and Tan (2008). Table 7.2 gives an overview over the publications by year. 7.3.3 New Service Development NSD involves the development of service offerings such as financial services, health care, telecommunications services, leisure and hospitality services, information ser- vices, l