SaaS or Software-as-a-Service is a cloud-based method of software delivery on a subscription basis also known as “on-demand software”. It means instead of purchasing the software you subscribe and just log in from any compatible device on the internet.
There are a lot of differences between SaaS and traditional software. By buying traditional software you pay for a license and then u get it and install it on your hardware right? But with SaaS, you pay a subscription (monthly, yearly, per consumption, etc…) and the software is ready for use.