ITIL 4 DSV study materials
ITIL 4 DSV study resources

ITIL 4 DSV: Demand

ITIL 4 DSV · Work through your exam, one topic at a time.

All guide sections

Demand

The Demand domain tests how demand arises, how it is modelled and shaped, and how it is balanced against capacity and supply within the service value chain.

Core rules

  • Demand is the need or desire for services from customers and users; it is an input to the service value chain, not a by-product of it.
  • Demand has patterns: predictable (seasonal, end-of-month), unpredictable (incidents, market shocks), and latent (unexpressed). Segment by customer, service, and time to improve forecasts.
  • Demand management covers modelling, forecasting, and shaping. Shaping tools include pricing, incentives, service-level tiers, scheduling, queues, promotions, and communication.
  • Balance demand and supply through capacity and performance management; where demand cannot be shaped, manage queues and backlog transparently.

Worked example

A cloud backup provider sees month-end peaks that require expensive peak capacity. It introduces off-peak discounts and automated scheduling for non-urgent backups. Reasoning: shaping shifts some demand to lower-cost periods, reducing the need for peak capacity; the remaining peak is handled with queuing and clear SLAs. The provider tracks take-up and the peak-to-average ratio to confirm the effect.

Traps

Do not treat demand management as simply refusing requests; do not confuse demand with capacity; do not ignore internal demand from staff or demand from partners; and do not forecast from a single data point. Latent demand is easy to miss because it produces no ticket.