The multi-level SLA' is a three-layer structure. Which one of the following layers is NOT part of this type of SLA?

Customer level is the second layer of the multi-level SLA, addressing SLM issues specific to a particular customer group.

Service level is the third layer of the multi-level SLA, addressing SLM issues for individual services delivered to customers.

Corporate level is the first layer of the multi-level SLA, covering all generic SLM issues appropriate to every customer across the organization.

The three defined layers of a multi-level SLA are: the corporate level covering generic SLM issues applicable to all customers, the customer level covering issues relevant to a specific customer group, and the service level covering SLM issues for individual services. A configuration level is not a recognized layer in this structure and does not exist as an SLA concept in ITIL.