Software as a Service, also know as SaaS, is a cloud-based service where instead of downloading software your desktop PC or business network to run and update, you instead access an application via an internet browser. The software application could be anything from office software to unified communications among a wide range of other business apps that are available.
Accessibility: One strong advantage of any SaaS application is the ability to run through an internet browser, so it doesn't matter which Operating System is used to access it. So regardless as to whether the user is trying to run the application on Windows, Mac, or Linux machines (or even smartphones running Android or iOS), the application still remains accessible. This makes SaaS applications incredible versatile in a couple of different ways.
Updates and patches: Another key advantage of SaaS applications is that because they run in the cloud, the vendor can update their software centrally without adversely affecting business operations for users. This is in stark contrast to on-premise software that will often require a degree of compatibility and endpoint security testing before even routine updates and patches can be applied.
Market reach: For vendors this means being able to supply a software service to the majority of the market, instead of just a limited and targeted market segment. This means that pricing can be cheaper and more accessible to businesses of every size. For users this means being able to access services not normally available, thus both expanding and improving business services, productivity and general opportunities.
Saving and storage: On premise storage of data means the need to invest in reliable backups such as through cloud storage or other disaster recovery plan to mitigate any serious hardware crash that might otherwise cause the significant loss of data. However, with SaaS, data is routinely saved in the cloud anyway. What makes this double advantageous is not just the redundancy aspect, but also that employees can switch between devices without losing work or data, simply by the fact of logging into the single account, regardless of which device is being used.