Amplifying understanding and building capacity through synergies "Unity is strength". This is the underlying principle that governs the alliance of two Greek OpenAIRE members, 'Athena' Research Center (NOAD) and 'HEAL-Link' - the consortium of academic libraries -, that work towards the wide adoption of OS policies and the alignment of the national context with the European Open Science Cloud (EOSC). The two organizations shared the activities, experiences and results of their fruitful coo...