Question

A retail company runs its e-commerce web tier on an Azure Virtual Machine Scale Set. Traffic follows a predictable pattern: it rises sharply every weekday at 9:00 AM and drops after 6:00 PM, but occasional flash sales cause sudden unpredictable CPU spikes at any time. The architect must minimize cost while ensuring capacity is ready for both the daily pattern and the unexpected spikes. Which autoscale configuration should be recommended?

Accepted Answer

Configure a scheduled profile for the recurring business hours combined with metric-based (CPU percentage) scale rules for on-demand spikes.

Answer

Configure only a scheduled scale profile that increases instance count at 9:00 AM and decreases it at 6:00 PM.

Answer

Configure only metric-based scale rules on CPU percentage with a long cooldown to avoid flapping.

Answer

Manually resize the scale set each morning and evening and provision maximum capacity to absorb spikes.