(2003) states it as a "new or considerably changed service concept, client interaction channel, service delivery system or technological concept that individually, but most likely in combination, leads to one or more (re)new(ed) service functions that are new to the firm and do change the service/good offered on the market and do require structurally new technological, human or organizational capabilities of the service organization." This definition covers the notions of technological and non-technological innovation. Non-technological innovations in services mainly arise from investment in intangible inputs.