HONOLULU, HI, Sep 30, 2008 (MARKET WIRE via COMTEX) -- Phase 2 International, a leader in the Software as a Service industry (SaaS), announced its partnership with Aria Systems, the primary supplier of on-demand billing and lifecycle management choices. The combined ingenuity of two industry leaders aims to maximize service and care for SaaS customers, with Aria Systems supporting its software catalogue and catering to its discerning business clientele.