In 1999, Marc Benioff founded Salesforce with a provocative premise. That enterprise software could be delivered over the internet as a service. The model that came to be known as Software as a Service (SaaS) was not new in concept. Still, Salesforce was the first company to apply it at scale to enterprise business applications. It was also the first to build an entire go-to-market strategy around a proposition that most of the industry regarded as implausible.