This week, the Zoo talks to Heidi Sanzari about the benefits of hosting apps on the salesforce.com platform. We unearth why Marc Benioff is the leading SaaS player today. How the feature gap between on-premise and cloud-based IT solutions, such as Remedyforce, is shrinking. And why SaaS is no longer only for SMBs. An avid biker, Heidi also shares her involvement in riding for charities.