Organizations invest significantly in Big Data Analytics (BDA), but only limited knowledge is available on the challenges faced by these organizations when trying to realize value in such projects. Benefits realization management (BRM) offers a perspective and processes for realizing value from information systems (IS) projects. Yet, limited research has investigated how this can be applied to development processes for BDA projects. We report an in-depth case study of a large organization’s BDA development processes and the inherent challenges of realizing value. From our analysis, we found eight necessary activities for realizing value in a BDA process and the challenges pertaining to each activity. These findings extend previous research on value creation in BDA projects with insights from practices in a large organization highly dedicated to exploiting Big Data. The paper discusses these findings as they relate to previous research and concludes with their implications for current BDA projects and future research.