In the first case, the delivery of the service is made independent of the particular circumstance in which the service is delivered. Processes and procedures are standardized and do not take particular circumstance into account or only allow for minor adjustments to these particular circumstances. This approach can be highly effective for implementing a differentiation strategy in the service delivery, and at the same time can produce economies by reducing and even eliminating uncertainty and fluctuation. Process standardization in service delivery can be applied in any case where the client is not actually involved in the service delivery- for example cleaning companies – or where standardizing the interaction with the client adds value to the client – for instance, by guaranteeing quality reliability. Fast-food chains are perfect examples of this. Generally speaking, this approach could be regarded as suitable for all maintenance-interactive types of services