The launch of represents a pledge by NSW Health to move beyond describing the patterns of health inequality in NSW to a commitment to action to reduce them. It seeks to build on existing policies and services, which are addressing health inequality across the health system, and in doing so reminds us that we already have a body of knowledge and experience that can guide development. In this Supplement, articles that have previously been published in the , which can inform the implementation of , have been brought together as a resource for health policymakers and practitioners across the State.