It has been over 20 years since Donna R. Gabaccia's seminal work Italy's Many Diasporas was published (London & New York, 2000), an overview of the social, cultural and economic history of Italy's various migrations. Much has changed since then, but this book remains a classic. In this roundtable, historians Lucy Riall, Pamela Ballinger and Konstantina Zanou reflect on the value of Gabaccia's work and on the historical moment of its production. They discuss with the author the developments in the historiography of Italian and other diasporas during the last two decades, and offer insights on new avenues of research including settler colonialism, race and belonging, migration and environmental change, global microhistory and biography, and the Mediterranean context of Italy's migrations.