Australia’s system of 60 Australian Marine Parks (AMPs) covers 3.8 million km2, about 43% of Australia’s marine jurisdiction, and protects important natural, cultural and heritage values, while providing social, cultural, and economic benefits for the Australian community and Aboriginal and Torres Strait Islander people. A system of marine parks of this size, diversity and significance requires targeted and effective management. Parks Australia continues to work closely with partners like the National Environmental Science Program (NESP) Marine and Coastal Hub to develop programs and systems to help ensure best practice monitoring, (management effectiveness) evaluation and reporting to support evidence-based management of the AMPs. This joint presentation between Parks Australia and NESP will outline progress towards a scalable national monitoring program that provides an understanding how our marine parks are changing and evaluates effectiveness of zoning arrangements and management approaches and interventions. It will also provide information on current thinking about how this information will be used to help inform reviews of Australian Marine Parks management plans in 2028.