SAAS -Software as a service is a way of delivering applications over the Internet. Instead of installing and maintaining software, you access it via the Internet, SaaS applications are sometimes called Web-based or hosted software.  SaaS works through the cloud delivery model. A software provider will either host the application and related data using its servers, databases, networking and computing resources, or it may be an ISV that contracts a cloud provider to host the application in the provider’s data centre. This application will be accessible to any device with a connection.

No doubt, SaaS removes the need for organizations to install and run applications on their computers or in their data centres by eliminating the expense of hardware acquisition, provisioning and maintenance, software licensing, installation and support. Also, they have integrated various SaaS applications with other software using application programming interfaces. Such applications are often customizable and can be integrated with other business applications, especially across applications from a common software provider.

Furthermore, Cloud services like SaaS offer Vertical high scalability, allowing customers to access more or fewer services or features on demand. Issues arise when providers experience service disruptions, impose unwanted changes to service offerings, or experience a security breach, which can profoundly affect the customers’ ability to use the SaaS offering. But, to proactively mitigate these issues, customers should understand their SaaS providers and ensure it is enforced. In addition, with using any cloud service provider, switching vendors can be crucial. Therefore, when switching vendors, customers must migrate large amounts of data. Some vendors use proprietary technologies and data types, further complicating customer data transfer between cloud providers.