The availability management practice is responsible for ensuring that services meet agreed availability levels and that the service health criteria are met. These criteria are used as inputs for the monitoring planning process to ensure services are monitored in alignment with agreed availability requirements.
Service design focuses on creating the architecture and specifications, but the health criteria for monitoring are more directly aligned with availability.
Capacity and performance management deals with performance levels, but not specifically with service health for monitoring.
Service catalogue management is about maintaining service information, not defining health criteria for monitoring.