Disruptive Technologies can assist an organisation to maintain a competitive advantage in the marketplace. Different terminology is used in the literature to describe disruptive technologies associated with uncertainty and risk. The term “disruptive technologies” is described and explained in comparison to sustaining technology. The aim of the research is to determine the impact of disruptive technologies on the ICT environment of an organisation. The impact of disruptive technology is discussed in terms of the business value of information technologies, the value network of the organisation, the current security framework of the information technology architecture, business processes and standards, approaches to business strategy, involvement of executive management and influence on customers and clients of the organisation. Three organisations within the South African environment agreed to be the subjects of the case studies. These were described and recommendations were made at the completion of the research.