Work out patch compliance percentage instantly with clear inputs, formula shown and shareable results.
Patch compliance as a single percentage hides risk concentration: 87 percent compliance sounds tolerable until you notice 38 hosts are missing critical patches. Severity-weighted reporting is what makes the metric actionable, because remediating those 38 matters far more than moving the headline figure by a few points.
Compliance
compliance = fully patched / hosts; hosts to remediate = ceil(hosts x target) - fully patched
Both. Per host tells you coverage; per patch tells you whether one problematic update is stuck everywhere, which points at a packaging or dependency issue.
Investigate individually. They are usually appliances, systems with change freezes, or hosts the patching agent cannot reach — each needs a different remedy.