Business Intelligence (BI) tools are adopted by more and more companies in the current environment that requires companies to operate as efficiently as possible. The paper investigates a BI adoption in a retail chain. Based on qualitative research methods, it analyses the business intelligence life cycle; it evaluates factors impacting the adoption from the diffusion of Innovations perspective. One of the findings is that requirements engineering is critical and even small issues have a tendency to cause big problems. This links to the sentiment among managers, often worrying that IT projects will run over-budget and/or over-time.