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Reluctance amongst enterprises to trust their applications and services to fully-hosted cloud services is highlighted by the type of cloud model deployed.
Understanding cloud types
The US National Institute of Standards and Technology (NIST) sets out the following definitions:
A research paper conducted by IDG Connect on behalf of SunGard Availability Services identified that on-premises cloud services models are preferred by the majority of respondents. Just over a third (37%) felt that private clouds were most suitable for business requirements; an equal number prefer hybrid cloud platforms that integrate in-house with externally hosted systems.
Private cloud services, which are hosted on single tenant, or exclusive use, architecture within third party provider data centres were cited as suitable by only 13%, with public clouds attracting support from just 7% of those surveyed.
Maintaining an open mind
Despite respondents’ overall low support for public cloud services, a shared, multi-tenanted architecture can in fact be suitable for some types of workloads.
Understandably, most IT departments prefer to keep mission critical data and applications on-premises. But they can benefit from migrating others to flexible, pay-as-you-go environments.
For example, on demand SaaS-based office suites and Platform-as-a-Service (PaaS) providers are ideal for supporting software testing and development processes on a temporary basis. You only pay for what you need, when you need it.
The survey also showed that the vast majority of organisations are looking to maintain either total or partial control of any cloud service or application they use. This reinforces the idea that the shared architecture characteristic of public cloud services may not serve their needs. It also shows the need for businesses to find the right cloud partner where a proper partnership based on trust, need and appropriate SLAs can be developed.
To find out more about cloud migration, download the full Cloud Workload Migration White Paper.