As information systems (IS) become inextricably linked with an organization’s strategy and operations, the requirement for an IS capability becomes paramount. This capability represents the organization’s ability to continuously deliver value from IS investments and is portrayed as the capacity to fuse IT knowledge and business knowledge, to construct a flexible IT infrastructure, and to exploit in full IS investments. Drawing on resource based theory, this paper extends the discourse in the literature, which is usually conducted at the organizational level, to an explicit incorporation of component resources. A model is developed linking IS capability with competencies, roles, knowledge, skills and personal attributes.