Cloud Computing Glossary

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H

HaaS
Hadoop as a Service. Provides Hadoop clusters on a private / public cloud. See also: Hadoop
Hadoop
Hadoop is an open-source, software framework that supports the processing of large data sets in a distributed computing environment. It enables applications to work with thousands of nodes and petabytes of data. It is written in Java and part of the…
Hybrid cloud
A combination of two or more clouds (private, community, or public) that remain unique entities but are bound together by standardized or proprietary technology that enables data and application portability.

I

IaaS
Infrastructure as a Service — Cloud infrastructure services, whereby a virtualized environment is delivered as a service over the Internet by the provider. The infrastructure can include servers, network equipment, and software.
Intercloud
A global cloud of clouds, similar in concept to the Internet being a global network of networks. See also: Intracloud
Intracloud
An Intercloud consisting of only private clouds.

L

LAMP
Acronym for a solution stack of free open-source software for web based applications consisting of Linux , Apache, MySQL and PHP. See also: open source software
Linux
An open source operating system based on Unix. It is the dominate operating system for cloud computing.

M

Measured service
In a measured service, aspects of the cloud service are controlled and monitored by the cloud provider. This is crucial for billing, access control, resource optimization, capacity planning and other tasks. Defined by the National Institute of…
Multitenancy
Multitenancy is the property of multiple systems, applications or data from different enterprises hosted on the same physical hardware. Multitenancy is common to most cloud-based system
MySQL
Open source SQL database software.

N

NIST
National Institute of Standards and Technology

O

On-demand self service
In a measured service, aspects of the cloud service are controlled and monitored by the cloud provider. This is crucial for billing, access control, resource optimization, capacity planning and other tasks. Defined by the National Institute of…
Open source software
Open source software (as an alternative to commercial software), is software whose source code is published and made available to the public, enabling anyone to copy, modify and improve the software.
OpenNebula
An open source toolkit for building public, private and hybrid clouds.

P

PaaS
Platform as a Service — Cloud platform services, whereby the computing platform (operating system and associated services) is delivered as a service over the Internet by the provider.
Private cloud
Services offered over the Internet or over a private internal network to only select users, not available to the general public.
Public cloud
Services offered over the public Internet and available to anyone who wants to purchase the service.

R

Rapid Elasticity
Elasticity is defined as the ability to scale resources both up and down as needed. To the consumer, the cloud appears to be infinite, and the consumer can purchase as much or as little computing power as they need. Defined by the National Institute…

S

SaaS
Software as a Service — Cloud application services, whereby applications are delivered over the Internet by the provider, so that the applications don’t have to be purchased, installed, and run on the customer’s computers. SaaS providers were…