What guidance does ITIL give on the frequency of production of service reporting?

ITIL's service reporting guidance states that reporting frequency and content must be negotiated and agreed with customers as part of service level agreements, because different customers have different informational needs and the same reporting cadence is not appropriate for every service or relationship.

Unilaterally setting reporting intervals ignores customer requirements and contradicts ITIL's principle that service targets and reporting obligations be mutually agreed within formal agreements.

ITIL prescribes no specific fixed frequency such as weekly - the appropriate interval depends entirely on the nature of the service and what has been agreed with the customer.

ITIL does not mandate uniform reporting intervals across all services, as criticality, customer preference, and contractual obligations vary and must be reflected in each individual agreement.