StackOverflow2013

Note that there are some explanatory texts on larger screens.

plurals

PO
text
Body
copied!<p>The answers above were fine for 2010, however standards have since emerged and NIST has come out with actual definitions of public and private clouds (see <a href="http://csrc.nist.gov/publications/nistpubs/800-145/SP800-145.pdf" rel="nofollow">NIST Cloud Computing Definitions</a>) NIST definitions are belowm, the <em>italics</em> are mine:</p> <ul> <li><p><strong>Private cloud.</strong> The cloud infrastructure is provisioned for exclusive use by a single organization comprising multiple consumers (e.g., business units). It may be owned, managed, and operated by the organization, a third party, or some combination of them, and it may exist on or off premises. <em>A private cloud may be provisioned any way an organization may like, with internal networks or a DMZ with some machines available to the public. Private clouds can resolve the noisy neighbor issues of public clouds - however depending on how the infrastructure is set up, you might end up becoming your own noisy neighbor.</em></p></li> <li><p><strong>Public cloud.</strong> The cloud infrastructure is provisioned for open use by the general public. It may be owned, managed, and operated by a business, academic, or government organization, or some combination of them. It exists on the premises of the cloud provider. <em>Quite possibly this is what everyone thinks of when they hear of Cloud, and make it almost synonymous with Amazon, although they are only 1 of the ever growing list of public cloud providers.</em></p></li> <li><p><strong>Community cloud</strong>. The cloud infrastructure is provisioned for exclusive use by a specific community of consumers from organizations that have shared concerns (e.g., mission, security requirements, policy, and compliance considerations). It may be owned, managed, and operated by one or more of the organizations in the community, a third party, or some combination of them, and it may exist on or off premises. <em>These are probably the next boom in clouds, but suffer a marketing problem. Recently I've seen them marketed as private clouds, but they share certain benefits, eg. HIPPA compliant clouds can be provisioned in a HIPPA compliant data center.</em></p></li> <li><p><strong>Hybrid cloud.</strong> The cloud infrastructure is a composition of two or more distinct cloud infrastructures (private, community, or public) that remain unique entities, but are bound together by standardized or proprietary technology that enables data and application portability (e.g., cloud bursting for load balancing between clouds)</p></li> </ul>

Querying!

Guidance

An individual column

Larger individual text columns get their own page to allow for proper reading.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload