A. Conducting customer and user satisfaction surveys to gather feedback on how customers and users perceive the support of IT services

B. Understanding how infrastructure and application suppliers are involved in the end-to-end value chain for the support of services

C. Asking for feedback from the internal technical teams to ensure they are able to deliver against the support requirements

D. Contacting the organization's ITSM software tool provider to learn about software updates which might improve the support of the services