A system, comprising: - at least one mobile communication network (105(n)) each one adapted to grant UE (110(n,m)) subscribed thereto a corresponding data quota (DQ(n,m)) comprising a corresponding amount of mobile data which the UE (110(n,m)) is allowed to exchange with the mobile communication network (105(n)) it is subscribed to; characterized in that the system further comprises: - a broker platform configured to make available for at least one mobile communication network (105(n)) a corresponding set of further data quotas (NQ(n,k), Q(n,p)), the broker platform being further configured to receive a data amount request DR(n,m) of a corresponding additional data quota (AD(n,m)) for a UE (110(n,m)) subscribed to a corresponding mobile communication network (105(n)), and, in response to said received data amount request (DR(n,m)), select a further data quota (NQ(n,k), Q(n,p)) from the set of further data quotas (NQ(n,k), Q(n,p)) corresponding to the mobile communication network (105(n)) said UE (110(n,m)) is subscribed to, and provide said additional data quota (AD(n,m)) to said UE (110(n,m)) through the mobile communication network (105(n)) said UE (110(n,m)) is subscribed to by exploiting at least a part of said selected further additional data quota (NQ(n,k), Q(n,p)), and the broker platform is further configured to - in response to a received data amount request (DR(n,m)) of an additional data quota (AD(n,m)) for a UE (110(n,m)) subscribed to a corresponding mobile communication network (105(n)), interact with a Session Management Function of said mobile communication network (105(n)) for opening a Packet Forwarding Control Protocol session toward an User Plane Function instance corresponding to said selected further data quota (NQ(n,k), Q(n,p)), and provide a corresponding data threshold for said additional data quota (AD(n,m)). - at least one mobile communication network (105(n)) each one adapted to grant UE (110(n,m)) subscribed thereto a corresponding data quota (DQ(n,m)) comprising a corresponding amount of mobile data which the UE (110(n,m)) is allowed to exchange with the mobile communication network (105(n)) it is subscribed to; - a broker platform configured to make available for at least one mobile communication network (105(n)) a corresponding set of further data quotas (NQ(n,k), Q(n,p)), the broker platform being further configured to receive a data amount request DR(n,m) of a corresponding additional data quota (AD(n,m)) for a UE (110(n,m)) subscribed to a corresponding mobile communication network (105(n)), and, in response to said received data amount request (DR(n,m)), select a further data quota (NQ(n,k), Q(n,p)) from the set of further data quotas (NQ(n,k), Q(n,p)) corresponding to the mobile communication network (105(n)) said UE (110(n,m)) is subscribed to, and provide said additional data quota (AD(n,m)) to said UE (110(n,m)) through the mobile communication network (105(n)) said UE (110(n,m)) is subscribed to by exploiting at least a part of said selected further additional data quota (NQ(n,k), Q(n,p)), - in response to a received data amount request (DR(n,m)) of an additional data quota (AD(n,m)) for a UE (110(n,m)) subscribed to a corresponding mobile communication network (105(n)), interact with a Session Management Function of said mobile communication network (105(n)) for opening a Packet Forwarding Control Protocol session toward an User Plane Function instance corresponding to said selected further data quota (NQ(n,k), Q(n,p)), and provide a corresponding data threshold for said additional data quota (AD(n,m)).