The document discusses how to conduct an effective Business Impact Analysis (BIA) according to ITIL best practices. It recommends a 6 step process: 1) establish impact measurement metrics and identify stakeholders, 2) create a standardized BIA form and questionnaire, 3) gather data by sending the questionnaire to stakeholders, 4) analyze the collected data to quantify potential impacts, 5) validate the findings with stakeholders, and 6) publish the final BIA report. Following this process results in a consistent, cost-effective way to improve IT decision making by considering all potential impacts.