Introduction and background Linking together data from different systems is central to understanding how people interact across different sectors and service settings. Recent developments in the Australian linked data landscape support the availability, accessibility and integration of data across multiple systems. This symposium highlights six studies that showcase innovative uses of these national linked data assets by the Australian Institute of Health and Welfare. Aims To demonstrate how linked data can improve understanding of service use, journeys and outcomes for older Australians across aged care, health care, palliative care, disability support and dementia-related services. Overview of activities to be conducted We will present six studies using linked data assets at system interfaces including: • timeliness of access to the approved level of aged care following a comprehensive assessment • health service use at the interface between aged care and the health system • use and timing of specialist palliative care for older people receiving aged care in the last year of life • National Disability Insurance Scheme participation among younger people living in residential aged care • integrating dementia specific datasets into enduring national linkage infrastructure to improve evidence on dementia pathways, prevalence and outcomes • approaches to engaging end users and communities in the development of the National Aged Care Data Asset. Expected learning outcomes for audience members Policymakers, providers, researchers and the broader community will gain insights on how linked data analysis is generating new evidence to support Australians and how end users are shaping these important national assets.