Software as a Service (SaaS)
Software as a Service - the cloud delivery model pioneered by Salesforce where applications are hosted centrally, accessed via web browser, maintained by the vendor, and sold as subscriptions rather than installed software.
Definition
Software as a Service - the cloud delivery model pioneered by Salesforce where applications are hosted centrally, accessed via web browser, maintained by the vendor, and sold as subscriptions rather than installed software.
In plain English
“Software as a Service (SaaS) is the cloud delivery model Salesforce pioneered: applications hosted centrally, accessed via browser, maintained by the vendor, and sold as subscriptions. It's the same concept as the SaaS entry elsewhere in this glossary, just using the full name.”
Worked example
Talisman Pharmaceuticals chose Software as a Service for its CRM rather than building or self-hosting one. The company runs Salesforce Sales Cloud (SaaS), Marketing Cloud (SaaS), Slack (SaaS), and Workday (SaaS) - none of which sit on Talisman-owned servers. The IT team doesn't patch operating systems, doesn't replace failed disks, doesn't size capacity for next quarter's user growth; the vendors handle that. Talisman pays subscription fees, accesses everything via browser and SSO, and gets new features three times a year without scheduling upgrade weekends. SaaS is the delivery model that lets a 2,000-person pharma company operate without a 200-person IT-ops team.
Why Software as a Service (SaaS) matters
Software as a Service (SaaS) is the cloud delivery model pioneered by Salesforce where applications are hosted centrally, accessed via web browser, maintained by the vendor, and sold as subscriptions. This entry uses the full name; see the SaaS entry for the same concept.
SaaS fundamentally changed enterprise software by eliminating on-premises infrastructure, manual upgrades, and upfront license fees. Salesforce's success with this model starting in 1999 demonstrated that enterprise customers would trust critical business data to a cloud vendor, paving the way for the entire cloud software industry.
How organizations use Software as a Service (SaaS)
Chose Salesforce's SaaS model for zero infrastructure management.
Benefits from SaaS automatic updates three times per year.
Teaches SaaS as foundational context for Salesforce architecture.
Test your knowledge
Q1. What is SaaS?
Q2. Who pioneered SaaS for enterprise?
Q3. What does it eliminate?
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