Guide to Understanding SaaS (Software as a Service) | HubSpot
https://www.hubspot.com/products/saas/what-is
WebIt’s an acronym that stands for software as a service and describes any software that isn’t run at your premises, never resides on a local machine, and is a full-blown app on its own. A few examples of SaaS companies include Zoom, Slack, Canva, Microsoft, and HubSpot.
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