German B2B materials company Alfa DE uses its Italian branch, Alfa IT, for support services like logistics consulting, client relationship management, and sales support, provided by Swiss company Alfa Europe AG. While Alfa IT facilitates sales between Alfa DE and Italian cooperative Gamma, and purchases from Italian supplier Delta, its services to Alfa DE are outside the scope of VAT.
Source: agenziaentrate.gov.it
Note that this post was (partially) written with the help of AI. It is always useful to review the original source material, and where needed to obtain (local) advice from a specialist.