Advantages of SaaS | disadvantages of SaaS

This page covers advantages and disadvantages of SaaS (Software as a Service) and its basics. It mentions benefits or advantages of SaaS and drawbacks or disadvantages of SaaS.

What is SaaS?

It allows users to access specific applications online. It means it allows to use software applications as a service to end users.

In SaaS model, software is deployed on a hosted service and it is accessible via internet. Following are some of the SaaS applications.
• Billing and Invoicing system
• CRM (Customer Relationship Management) apps
• Help Desk apps
• HR (Human Resource) solutions

IaaS PaaS SaaS

The figure-1 mentions all the tasks performed by SaaS.

SaaS diagram

One of the application example of SaaS is shown in figure-2.

Examples of SaaS vendors :
• SalesForce
• Oracle
• Intuit
• Microsoft
• Google
• Postini
• Facebook
• Netsuite

Benefits or advantages of SaaS

Following are the benefits or advantages of SaaS:
➨It is the most cost effective cloud service as providers only lease the software and not the resource.
➨SaaS requires minimal planning and it is easy to setup.
➨Applications are simple in usage and are available readymade.
➨It offers rapid deployment as software apps are fully provisioned on demand.
➨It offers efficient use of software licenses.
➨Software is very stable and it is supported by cloud provider's large infrastructure and IT team.
➨It offers centralized management and data.
➨In SaaS, Platform responsibilities managed by providers. Hence customers do not need to worry about management of applications.
➨Multitenant solutions

Drawbacks or disadvantages of SaaS

Following are the drawbacks or disadvantages of SaaS:
➨The customer has no control over system processing its data.
➨There is no control over which customers use the software. Hence large number of users use the software such as Dropbox.
➨There is little or no control over the parameters of the software.
➨There is little control over deployment, upgrade and testing methodologies.
➨Currently only a few software solutions are offered in the form of SaaS.
➨The integration with other software or any other systems is either difficult or unsupported.
➨The cloud provider has full access to customers' data unless cryptography is used.

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