What is Italian Jews?

Italian Jews or Roman Jews can be used in a broad sense to mean all Jews living in or with roots in Italy, or, in a narrower sense, to mean the Italkim, an ancient community living in Italy since the Ancient Roman era, who use the Italian liturgy as distinct from those Jewish communities in Italy dating from medieval or modern times who use the Sephardic liturgy, the Italian Nusach or the Nusach Ashkenaz.