quot; Organisational critical activities quot; (OCAs) are activities which must be conducted by the organisation constantly in order to be successful in the industry. They are recognised as being essential to short, medium, and long-term success in that industry, have been significantly resourced and receive regular senior management monitoring and direction. Although these activities are extremely important, some empirical studies have shown that they are not well supported by organisations, particularly in the area of Web support. This thesis develops an evaluation methodology called the quot;organisational critical activity Web support evaluation methodology quot; (OCAWSEM) which can be utilised to elicit OCAs from organisations, evaluate whether an organisation acutes; OCAs are being supported by its Web site, and provide guidance on how the organisation can improve its Web site. To develop the OCAWSEM, this thesis reviews the relevant literature and proposes a prototype OCAWSEM. A new iterative case design (ICD) approach has been used in order to further develop the prototype, and then to test the improved OCAWSEM. The selected field cases were eight universities in New Zealand. In total, 43 semi-structured interviews were conducted with senior teams, middle level managers, and Web teams. A systematic review of these universitiesacute Web sites was performed from the provideracutes, rather than the useracutes perspective. The outcome shows that the Developed OCAWSEM is a valid and reliable methodology for the evaluation of the support for OCAs from Web sites in the universities in New Zealand. This thesis provides useful lessons, drawn from the development and testing processes, as the basis from which to develop more specific OCAWSEMs for use in other organisational and industry contexts. Both practitioners and academicians can gain a deeper understanding of the notion of OCAs, better elicit OCAs from management, conduct Web site evaluations, and discuss the support of the Web sites for the OCAs.