“…In most of the current practice in separating functional and non-functional properties, non-functional properties are specified on a per-service basis (?, ? ; Amir & Zeid, 2004;Lodderstedt, Basin, & Doser, 2002;Jrjens, 2002;Nakamura, Tatsubori, Imamura, & Ono, 2005;Soler, Villarroel, Trujillo, Medina, & Piattini, 2006;Vokäc, 2005;Baligand & Monfort, 2004;G. Wang, Chen, Wang, Fung, & Uczekaj, 2004).…”