Plain-English definition
What SaaS (Software as a Service) means.
SaaS is the subscription model most modern business software uses. You pay monthly or annually to access the software through a web browser, and the vendor handles hosting, updates, and maintenance. Examples include ServiceTitan, QuickBooks Online, HubSpot, and Slack. The trade-off is convenience versus control: SaaS is easy to start but hard to customize, and your data lives on someone else's servers.
Why operators care
Where it shows up in the business.
A business can accumulate overlapping subscriptions as its workflows change. Review which tools people use, what each costs, how they connect, and what happens to the data if a subscription ends.