The document discusses the role of public and open data ecosystems in the context of smart cities and sustainable development goals (SDGs) at a conference held in Sevilla, Spain, from June 28 to June 30, 2023. It highlights the importance of these data ecosystems for enhancing transparency, accountability, and co-creation among stakeholders while emphasizing the need for effective data management to support smart living and society 5.0. Additionally, the document explores various applications of open data in sectors like public administration, disaster response, and economic growth.