UNIVERSITÀ DI PISA DIPARTIMENTO DI I NFORMATICA T ECHNICAL R EPORT Predicting the QoS of service orchestrations Leonardo Bartoloni, Antonio Brogi, and Ahmad Ibrahim March 10, 2015 LICENSE: Creative Commons: Attribution-Noncommercial - No Derivative Works ADDRESS: Largo B. Pontecorvo 3, 56127 Pisa, Italy. TEL: +39 050 2212700 FAX: +39 050 2212726