Most SaaS services allow the software to be used from any device with a web browser and internet connection. Data is stored in the cloud, rather than on users’ own devices. The software is paid for on a subscription basis (normally monthly or annually) with updates automatically included.
This contrasts with the traditional licensing of software, where organizations would typically pay a one-off upfront fee for the number of licenses needed, install software on machines, and then potentially pay for ongoing support and updates.