Abstract
Cognitive Cloud has drawn increasing attention from practitioners, academics, and funding agencies and has been adopted progressively. However, the concept remains mired in various definitions with different studies providing contrasting descriptions. Therefore, to understand the concept of cognitive cloud and to provide its definition, in this work we conduct a systematic mapping study of the literature investigating 24 papers proposing five main definitions. The main outcome of this work is a complete definition that merges all the common aspects of cognitive cloud, enabling practitioners and researchers to better understand what cognitive cloud is.