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Software as a service (SaaS / s æ s / [1]) is a cloud computing service model where the provider offers use of application software to a client and manages all needed physical and software resources. [2] Unlike other software delivery models, it separates "the possession and ownership of software from its use". [3]
If a software product is offered as Hybrid SaaS [1] or Hybrid Cloud, [2] it means that it combines elements of both Software-as-a-Service (SaaS) and on-premises software deployment models. In the case of a hybrid model, the software product offers a combination of cloud-based SaaS functionality and on-premises capabilities.
In the software as a service (SaaS) model, users gain access to application software and databases. Cloud providers manage the infrastructure and platforms that run the applications. SaaS is sometimes referred to as "on-demand software" and is usually priced on a pay-per-use basis or using a subscription fee. [48]
The original concept for business process modeler with a SaaS deployment model came with BluePrint, an application developed by Lombardi Inc. The company with its range of BPM products caught IBM's attention, so in January 2010 they made an acquisition of Lombardi. IBM already had a product in the same space known as IBM Blueworks, but that was ...
The Twelve-Factor App methodology is a methodology for building software-as-a-service applications. These best practices are designed to enable applications to be built with portability and resilience when deployed to the web. [1]
SaaS is scalable, and system administrators may load the applications on several servers. In the past, each customer would purchase and load their own copy of the application to each of their own servers, but with the SaaS the customer can access the application without installing the software locally. SaaS typically involves a monthly or ...
The model enables practitioners to craft a project plan and to identify the milestones of a service-oriented initiative. SOMF also provides a common modeling notation to address alignment between business and IT organizations. Elements of SOA, by Dirk Krafzig, Karl Banke, and Dirk Slama [27] SOA meta-model, The Linthicum Group, 2007
"X as a service" (rendered as *aaS in acronyms) is a phrasal template for any business model in which a product use is offered as a subscription-based service rather than as an artifact owned and maintained by the customer. Originating from the software as a service concept that appeared in the 2010s with the advent of cloud computing, [1] [2] the template has expanded to numerous offerings in t