webex confidential1 shawn farshchi cio and vice president mediatone network communications steven levine technical marketing manager on demand platforms were not all created equal software as a service needs comprehensive approach confidential2 some market considerations ecosystems models benefits requirements confidential3 global warming in the saas ecosystem ozone layer front loaded licensing tough upgrade cyclesinflexible customization multi tenancy version you can eat easy upgrades flexible confidential4 premise licensed model services single applications limited features added at higher cost ubiquitous use vpn users suffer due to internal orientation app server farm asset mgmt no performance guarantees business continuity limitations security provided by self monitoring infrastructure local area client desktop complex installs confidential5 collaboration sales support training xml api communication protocols t 120 h 323 http & https compression encryption ssl aes ucf tenant sla measures intrusion detection private confidential6