In the most recent years, Economic Statistics, like other applied and non-applied sciences, has been involved in the new intense data revolution, which regards all research fields, especially for data collection and data processing issues. The traditional statistical measures, used to monitor economic activities, are transformed from slow and periodic recordings into real-time information, with the need to integrate different sources of information. Complex data offer additional information to analyse economic phenomena, although main problems are still open questions regarding methodological issues, costs of collection, storing and analysis. In the light of this new scenario, the 2nd Conference on Economic Statistics “Statistical Analysis of Complex Economic Data: recent developments and applications”, which occurred in Florence on 7-8 February 2024, aimed to discuss the management and the usefulness of complex data in the analysis of economic phenomena, focusing on the recent developments and empirical applications. This Book of Short Papers includes 40 contributions presented and discussed during the Conference, offering the reader a summary of the contents of the Conference.