Definition
Impact analysis is the process of identifying and evaluating the potential consequences of a proposed change or event on a system, project, or organization. It involves systematically assessing how a modification to one component might affect other parts, including resources, timelines, costs, and overall functionality. This proactive approach helps teams understand the ripple effects of decisions before they are implemented, enabling better risk management and informed decision making. For instance, a cybersecurity team might conduct an impact analysis to determine how a new firewall rule could affect network performance and access to critical applications. It differs from a simple risk assessment by focusing specifically on the downstream effects of a change rather than just the likelihood and severity of a threat. This concept is frequently tested in cybersecurity certifications like Security+ and CySA+.