Conventional definitions are mostly restricted to public versus private clouds. However, the Cloud Cube white paper from the Jericho Forum and Chris Hoff's elaboration on the cloud cube expanded my concept to include a much broader spectrum of possibilities.
Not only can clouds categorized in terms of public and private but they can also be characterized in many other terms as well. Consider the following possibilities:
- Internal/External (e.g. in your company's datacenter),
- Open/Proprietary (e.g. Interoperable, Portable and Interchangeable),
- Perimeterised/De-perimeterised (e.g. Operating within the traditional IT perimeter),
- Offshore/Onshore (e.g. would offshoring data create a security or privacy risk?),
- Reglatory X compliant/Non-compliant (e.g. HIPPA, FISMA, SOX, ... etc.)
- Single tenancy/Multi-tenancy (dedicated/shared server, network storage,... etc.),
- Isolated data/co-mingled data (e.g. disk storage, database, backups, directory),
- Dedicated security/Socialist security,
- and On-premise/Off-premise
Thanks to the folks at the Jericho Forum and Chris Hoff for broadening my perspective.
Thanks also to Joel Weise for the referral to Chris Hoff's blog.