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When it comes to delivering a cloud deployment there is a spectrum of deployment options available for you to choose from. The most common and written about is the public cloud option like Amazon Elastic Compute Cloud (EC2), or Google Apps. These cloud deployments allow any user with a credit card to gain access to the resources. To a private cloud deployment where all the resources are owned, managed and controlled by the enterprise. To gradations in between from third party managed, to third party hosted, to a very common emerging model called “shared cloud services” or “member cloud services.” Here you must be a member to access the services, and they can be made available to you typically in a shared resources option or a dedicated resources option, depending on your needs and configurations. It is this last model where IBM has offerings call IBM Smart Business Services on the IBM Cloud.
Finally you can merge the options between public and private and create what has been coined a “hybrid cloud”.
When it comes to deciding which cloud delivery option you want to choose it needs to tailored to the business, the time and money requirements, and the availability of the resources. There is a spectrum of delivery options, and there is no single right way.
Implemented on client premises
Client runs/ manages
Managed private cloud
Hosted private cloud
Internal networkThird-party owned and operated
Internal networkMix of shared and dedicated resources
Shared Cloud Services
Shared facility and staff
Virtual private network (VPN) access
Subscription or membership basedShared resources
Pay as you go
A Hybrid cloud solution is some mix of private and public integrated with your traditional IT to deliver the cloud solution to the end user and can involve any of the public to private options.