This research reviews the task-technology fit literature and draws parallels with the internal-external efficacy model recently developed by Eden (2001). In particular, it argues that the construct of task-technology fit, operationalized with perceptual measures as is commonly done, is equivalent to the concept of means efficacy included in the internal-external efficacy model. As a result, the latter provides a theoretical lens through which existing results in the task-technology fit literature can be interpreted, as well as a number of avenues for further research that have not been conceptualized before. A research model based on these arguments is outlined, as well as the potential contribution of carrying out such study.