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Multi-Tenancy on Private Cloud

Multi-Tenancy on Private Cloud

Abstract

Advances in cloud computing technology and changes in business models create major paradigm shifts in the way software applications are designed, built, and delivered to end users. The concept of multi-tenancy is one of the key and direct derivatives of cloud computing. Multi-tenancy is an architectural model that optimizes resource sharing. The applications will be deployed and delivered from a shared environment while providing sufficient levels of isolation to the tenants and Quality of Service (QoS) throughout the environment. Like any other paradigm shift, a cloud-based delivery (SaaS) model also comes with a new set of technical challenges.

This paper provides a technical overview on how to convert an application traditionally hosted on-premise to a multi-tenant environment and deliver through an SaaS model. This paper also covers the challenges and benefits of moving this to a cloud infrastructure.

Excerpts from the Paper
The advent of  cloud computing boosted  a new business model for  delivering software, which is generally termed SaaS (Software as a Service). ISVs started realizing the necessity of transforming their traditional on-premise products to the new ―cloud business model. Multi-tenancy is the fundamental design approach that  essentially improves the acceptability of SaaS applications. The idea of multi-tenancy, or many tenants sharing resources, is fundamental to cloud computing. Isolation and service  assurance are the key elements to be addressed. Isolation  ensures that the resources of existing tenants remain untouched, and the integrity of the applications, workloads, and data remain uncompromised when the service provider provisions new tenants. Each tenant may have access to different amounts of network, computing, and storage resources in the  shared virtual environment. Tenants see only those resources allocated to them.

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