. Intangibles may be difficult to store. An amusement park delivers the intangibleproductofenjoyment.Itmaybeimpossibletoproduceandstock-pile enjoyment during the off season to help meet the surge in demand during the busy season. This relates to the true concept of simultaneous productionandconsumptionofservices,i.e.servicesareusuallyproducedat the time of demand and not before. As such, just-in-time (JIT) delivery is a requirement, not an option. The supply chain management issue of production timing to meet customer needs becomes largely dichotomous ± either the service provider is capable of producing at the time of customer demand, or the service provider is not. The manufacturing issue of ``production smoothing'' is a non-issue for most services. (Although demand smoothingcanbeemployedthroughpriceincentives,etc.)