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, 1 February
There is no cloud.
<blockquote>The "cloud" is just somebody else's computer.</blockquote>
From [[wp:Cloud computing]], The NIST definition of cloud computing identifies 5 essential characteristics<ref>{{cite tech report |title=The NIST Definition of Cloud Computing |number=Special publication 800-145|institution=National Institute of Standards and Technology: U.S. Department of Commerce|date= September 2011|author1= Mell, Peter |author2= Timothy Grance |doi= 10.6028/NIST.SP.800-145}}</ref>
# On-demand self-service
# Broad network access
# Resource pooling
# Rapid elasticity
# Measured service
== Types of Cloud Computing ==
=== Cloud Computing Models ===
* Infrastructure as a Service
* Platform as a Service
* Software as a Service - the professionally supported [[QualityBox]] distribution of [[MediaWiki]] was a SaaS example.
=== Cloud Computing Deployment Models ===
* Cloud
* Hybrid
* On-premises - a way to provide dedicated resources at a lower cost while still utilizing virtualization and modern resource management. A [[Kubernetes]] cluster built with a handful of Raspberry Pis in your home lab would be an on-premises cloud.
