ATTRACT stands for breAkThrough innovaTion pRogrAmme for a pan-European deteCtion and Imaging ecosysTem. It is a novel R&D&I collaborative framework and bottom-up programme around Detection and Imaging Technologies. It engages both the research communities using European Research Infrastructures (ERIs) and Industry with special attention paid to the Small and Medium size Enterprises (SMEs). It seeks the benefit of these stakeholders and the European society at large. ATTRACT focuses on Detection and Imaging Technologies because they are crucial enablers for industrial competitiveness. They are as well key for pushing the limits of scientific knowledge pursued by ERIs. They also constitute an essential element for future applications, products or businesses targeting future Societal Challenges.