AUS sitePublic Private Hybrid or Community Cloud Which is Right for YOU?
Abstract: A self-assessment tool to assists IT-departments in enterprises evaluate all possible cloud-models to work out which is right for their business.
There are several critical decisions you need to make as your organization takes its first step into cloud computing:
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TIP: You may find that one cloud model works best for one project but not another. It’s about finding the best balance of Speed, cost, utilization & compliance.
Public cloud | Is a public cloud right for you? | If you can tick most of these indicators, public cloud may be your best option |  |
Speed | Your project needs to get up and running in under six months
| Your project has a short-term lifecycle making a rent-now option attractive to building it  | |
Budget | There’s no capex budget available for this project
| There’s opex budget available for this project
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Resources | Your technical team is very small
| Your technical team doesn’t have a lot of virtualization or cloud experience
| You struggle to hire developers and sysadmins with cloud skills
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Demand | Demand for your cloud application is likely to be unpredictable
| Demand for your cloud application or service will experience peaks & troughs
| Your current IT infrastructure will struggle to handle the workloads
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Privacy | Compliance | You are happy to host your applications and data in a 3rd party data center
| You are comfortable making your applications & data accessible via the internet
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TIP: A public cloud approach may appear cost-effective than a private cloud at first but beware of ‘image sprawl.’ Paying for VM licenses in the cloud could see costs spiral out of control. To keep costs down, rent short term & use a free open source OS instead.
Private cloud | Is a private cloud right for you? | If you can tick most of these indicators, private cloud may be your best option |  |
Speed | You have the time to build, an internal private cloud first before deploying your apps
| You already have the cloud infrastructure available
| Your project has a med-long term lifecycle, so building seems attractive to renting |
Budget | There is capex or opex budget to build the private cloud infrastructure
| There is a opex budget available to operate & manage the cloud infrastructure
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Resources | You have a good sized in-house technical team
| Your technical team has virtualization or cloud experience
| You have a budget to hire developers & sysadmins with cloud skills
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Demand | Your cloud infrastructure will be able to handle demand even during high peaks
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Privacy | Compliance | Your project involves sensitive data subject to data & privacy laws
| Your data & apps must be hosted on premise or at an approved dc in country
| Your SLA / IT governance policies specify that the data will be hosted by you
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Tip: You have time & budget to build a private cloud but may need expertise to operate. Consider a fully managed service from Canonical.
If you have cloud-operations expertise, or, are willing to learn, consider Red Hat or openQRM. They all use OpenStack!
Click here to Test-Drive all available IaaS Infrastructure as a Service platforms
Hybrid cloud | Is a hybrid cloud right for you? | If you can tick most of these indicators, hybrid cloud may be your best option |  |
Speed | You have built a private cloud
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Budget | There is an opex budget to operate your private cloud infrastructure
| There is an opex budget to rent / consume 3rd party resources as needed on demand
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Resources | You have an internal cloud that is ready to use
| Your technical team has virtualization or cloud experience | You have a budget to hire developers & sysadmins with cloud skills
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Demand | Your in-house cloud may not be able to handle high peaks of user demand
| Business requires a higher level of service availability by replicating workloads
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Privacy | Compliance | Your project involves non sensitive data
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Tip: Interoperability between clouds is vital in a hybrid approach. Any OpenStack based platform hybrids well to AWS and to other OpenStack clouds. So does MS Azure Stack with Azure cloud
Click here to Test Drive MS Azure Stack
Community cloud | Is a community cloud right for you? | If you can tick most of these indicators, community cloud may be your best option |  |
Speed | You already have the cloud infrastructure available
| There are others similar to start sharing resources with
| You are already member of a community cloud
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Budget | There is an opex budget to operate your private cloud infrastructure
| There is a budget available to connect to a community cloud
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Resources | You have an internal cloud that is ready to use
| Your technical team has virtualization or cloud experience
| You have a budget & staff to hire developers & sysadmins with cloud skills
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Demand | Your in-house cloud may not be able to handle high peaks of user demand
| Your in-house cloud may not be able to handle bursts of data processing / analytics
| Workloads in your cloud are not being replicated in a second site and this has an impact to your service-availability
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Privacy | Compliance | Your project involves sensitive data subject to data & privacy laws
| Your data & apps must be hosted on premise or at an approved dc in country
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Tip: The greenest, most efficient use of resources are underutilized resources. Combining underutilized resources in any community cloud: National, science, education, defense, banking etc. carries significant benefits to members sharing.
Click here to Test-Drive Red Hat OpenStack 13 with OpenShift