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?

Introduction:
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
• SAP
• 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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