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By: Ralph Presciutti, partner with Tatum. Follow Ralph on Twitter at @RalphPresciutti.
Which Cloud computing model best suits the computing services you need?
Most end users of cloud computing services – think web-based CRM systems as an example – care only about service delivery, not focusing on the abstraction of where or by whom the service is provided. But for senior business leaders the nagging question of data security drives a need for a deeper understanding of “ the cloud.”
At its most basic level three Cloud computing models have emerged: Public, Private and Hybrid. Determining which model is best suited for a particular application is an important consideration.
So what are the differences? A Public Cloud is typically internet-based, operates at remote facilities, hosts multiple tenants and uses a pay-as-you-go operational model. As the name implies, Private Clouds are Intranet-based, utilize internal IT infrastructure and offer on-demand services with chargeback billing. A Hybrid Cloud includes some components from the Public and Private models, providing corporate users with the ability to choose between them depending on workload requirements.
Where’s the Data?
When considering your options, the question of where applications and data reside is of primary importance. For example, applications hosted in the Public Cloud may require that data be stored in close physical proximity, or in different application architectures, to avoid slow service that will frustrate users.
Many companies are concerned with data security when operating in a public cloud. For this reason, the Private Cloud model may be a more attractive. In the Private Cloud model, applications and data are stored in the corporate data center(s). Latency, security, privacy, compliance and regulatory requirements are addressed in a similar fashion to the traditional computing model. While this may quell security concerns, it may also significantly compromise the promised cost savings of Cloud computing.
When considering a public cloud option, there are some basic questions to explore to understand if the security, which may be more than adequate for your business needs. Ask questions like
- How do they avoid providing unauthorized access to others?
- How do they protect against a potential breech?
- How stringent are their auditing procedures?
- How will they help you meet your regulatory and compliance requirements (HIPPA, SOX, SAS 70, etc.)?
With some due diligence in the selection process, most businesses can reap the financial benefits of Cloud computing while avoiding the potential pitfalls.