Term Kind Topic What it is
Pre-Scaling Scheduled Scaling, Predictive Scaling practice Autoscaling Provisioning capacity before demand arrives, based on a forecast or a known event, because autoscaling cannot respond faster than its provisioning loop.
Scheduled Capacity Predictive Provisioning, Calendar-Driven Scaling practice Autoscaling Provisioning ahead of a known event rather than reacting to its traffic - the correct primary control for any spike whose rise time is shorter than an autoscaler's reaction time.
Slack 2021: When Autoscaling Cannot Keep Up Slack January 2021 Outage case-study Autoscaling The first Monday back after the holidays produced a traffic ramp that outpaced the scaling behaviour of a managed network component, and the degradation cascaded.
Target Tracking Scaling pattern Autoscaling An autoscaling policy that adds or removes capacity to hold a chosen metric near a target value, like a thermostat, rather than reacting to threshold breaches.
Warm Pool pattern Autoscaling Pre-initialised instances held in a stopped or standby state so that scaling out skips boot and application warm-up.