The THREE SEAS ONE OPPORTUNITY (3S1O) conference aims to promote cooperation, connectivity, and economic development within the Three Seas region. By bringing together stakeholders from the Baltic, Black, and Adriatic Seas, the conference seeks to explore the untapped potential of this dynamic area. The event focuses on infrastructure development, energy security, digital transformation, and environmental sustainability as key pillars for unlocking opportunities and fostering prosperity. Through knowledge-sharing, collaboration, and innovation, the conference strives to create a platform where ideas can thrive and partnerships can be forged, leading to a brighter future for the Three Seas region.