The A-AAGORA Digital Knowledge System is a central digital resource developed to support the objectives of the Horizon Europe project Atlantic-Arctic Agora (A-AAGORA).  Designed as a hub for knowledge sharing and engagement, the platform supports key project priorities, including the protection and restoration of marine and freshwater ecosystems and biodiversity, the strengthening of coastal community resilience to climate change, and the mitigation of climate impacts while promoting societal well-being.