SAAS – Software as a Service
SAAS means ‘software as a service’ and is one cloud computing approach for the processing of big data. Such services typically provide specific ‘ready-to-run applications’ that are sometimes also related to geographical locations. The service application is centrally hosted and the usage model of this cloud computing software is a license purchased on subscription basis (e.g. yearly, monthly, etc.). A user accesses such a service via the Web browser. It is thus a brower-based application Software for hundreds or thousands of paid cloud customers. It is very interesting for customers since there is no upfront investment in servers, local installation efforts or software licensing. SAAS enables a delivery of software from some cloud provider to the Desktop independent of the local machine used. In other words users can change from their local desktop machines to handheld devices being still able to access the same cloud software. Also, this cloud computing model relies on the cloud provider to perform all security functions in order to provide a secure software offering. But it is also very interesting for cloud Software providers, because the costs are rather low, compared with conventional distributing user applications via shops or downloads. Cloud computing providers offer services on three different levels: Infrastructure as a Service (IaaS), Platform as a Service (PaaS), and SaaS. In many SaaS cases, tools offered by PaaS are utilized in creating applications and the management of deployments on resources is often offered by IaaS providers. As a consequence, the three different levels are often used in one concrete SaaS offering without end users knowing this fact.
The examples show that this type of cloud computing has become a common delivery model in many application domains. Those include business processes, industry applications, Enterprise resource planning, human resources. Famous rather general examples include Google Docs, Google gMail, Microsoft SharePoint. One domain example is Customer Relationship Management (CRM) wherein all conversations with customers and their data are made available in one place and analytics are provided in context. This includes analytics of customers engaging in social media, communicating via emails, and have phone conversations and meetings in persons. One CRM example is the cloud computing application called ZOHO CRM Another example is Salesforce.com CRM.
More Information about SAAS
Plese refer to the following video for more details:
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