Sample sizeOne of the fundamental tasks of qualitative research, other than selecting a research topic, is to produce credible research by obtaining a suitable sample. This is to ensure that there are sufficient facts for possible research and justification of qualitative research findings (Marshall, Cardon, Poddar, & Fontenot, 2013). According to Marshall, Cardon, Poddar, and Fontenot (2013), qualitative researchers rarely justify the sample sizes of qualitative interviews. Furthermore, available qualitative research methodologies provide few concrete guidelines for estimating adequate sample sizes. This is particularly evident in information systems (IS) research studies (Marshall, Cardon, Poddar, & Fontenot, 2013), despite the plethora of qualitative information systems (IS) research information that exists . Indeed, according to Sarker, Xiao, and Beaulieu (2013), until the mid-1990s, a significant number of traditional IS researchers, particularly those in North America and Asia, considered research to be quantitative and than studies not using accepted quantitative methods. Methods have been excluded from the definition of research itself. Qualitative research uses purposive sampling instead of drawing a random sample and meeting the assumptions of statistical analysis techniques. Hanson, Balmer, and Giardino (2011) noted that research chooses a sample of participants or documents to achieve a particular goal and obtain the information most applicable to the research question. As the study progresses, the qualitative researcher may identify additional participants or materials that may confirm or challenge emerging ideas in an effort to deepen understanding and clarify themes (Hanson, Balmer , &...... middle of article... ...a new series of qualitative interviews in this research Journal of Computer Information Systems, 54(1), 11-22.Metwally, E. ( 2013) Using the case research approach to understand the effect of change management through technology on achieving strategic competitiveness in private banks: Journal of International Finance & Economics, 13(2), 5-20.Padgett, D. (2004) Belmont, CA: Books/Cole Cengage Learning www.cengagebrain.comPutra, I. (2013). Interdisciplinary Journal of Contemporary Business Research, 5(5), 488-504. Retrieved from http://journal-archieves35.webs. .com/488-504.pdf Sarker, S., Xiao, X. and Beaulieu, T. (2013). Qualitative studies in information systems: a critical review and some guiding principles. MIS Quarterly, 37(4), iii-xviii.