by Phil Wainewright
Speaking in the opening keynote of SIIA OnDemand in San Jose this morning, SuccessFactors CEO Lars Dalgaard let slip a statistic that set several attendees a-twittering. He revealed that the SaaS provider’s multi-tenant application infrastructure supports its 2,850+ customers and 5.4+ million users on just 150 servers.
The ability to achieve such enormous economies of scale demonstrates the huge power of multi-tenancy and gives the lie to the line, so often peddled by the conventional on-premise software vendors, that SaaS is just a delivery option. SuccessFactors would not be able to run its operations with anything like the same low overhead if it had to separately maintain the ability to ship on-premise instances of its software.
