SaaS, short for “software as a service”, is a way of delivering software that doesn’t require you to update it when a new version comes out. The software vendor does that for you.

You typically access SaaS software through a web browser, so there’s no need to install anything on your computer.

Instead of buying it with one big payment, you pay for SaaS products on a recurring basis, usually monthly or annually.

Examples of SaaS Products

• Gmail
• QuickBooks Online
• Dropbox
• LinkedIn
• Evernote

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References

"What is SaaS? Software as a Service | Microsoft Azure" https://azure.microsoft.com/en-us/overview/what-is-saas/

"What is Software as a Service (SaaS): A Beginner's Guide - Salesforce" https://www.salesforce.com/in/saas/