Windows Server uses a different rollout model than Windows client because the telemetry signals that enable safe, phased deployment on Home and Pro SKUs do not meaningfully exist or apply in server environments. Windows Server systems commonly have limited or disabled telemetry, and client‑SKU telemetry cannot be used as a proxy to assess risk or readiness for server platforms. As a result, Secure Boot CA and KEK updates for Windows Server are not rolled out through Controlled Feature Rollout or confidence‑based phasing. Instead, Microsoft delivers the required update components through cumulative updates, and administrators explicitly initiate certificate updates on servers that need them, aligned with their own validation and maintenance processes.