Managed XDR sizing determines the resources, coverage scope, and service level required to effectively monitor, detect, and respond to security threats across an organization’s endpoints, networks, cloud, and applications. It evaluates factors such as the number of devices, data volumes, log sources, integration needs, and operational complexity. Proper sizing ensures accurate cost estimation, optimized performance, and a right-fit XDR deployment tailored to the organization’s risk profile and security maturity.