Warm standby
A fully functional DR environment already exists, just at smaller scale. Disaster response becomes scale-up plus traffic failover.
Standby liveApps, DB, storage, and observability are already present.
Scale capacityAdd nodes or instances to reach production load.
Promote and validateConfirm data freshness and service checks.
Route trafficGlobal DNS or LB moves users to DR.
Enterprise sweet spot
Minutes, not hours
Faster and safer than cold recovery without the full burden of active-active.
Standing cost
Always paying for readiness
You buy lower recovery risk by running more infrastructure continuously.
Common answer for serious customer-facing platforms with meaningful outage cost.