Cloud Computing For Dummies


The communication between a computer (requester) and a server (provides services). The computer has software that allows it to connect to a server.

Data Replication

This is the process of sharing information between sources to improve reliability and redundancy. Data is said to be “replicated” when the same data is stored on multiple devices and, sometimes, in multiple locations.


Housing and serving of data or voice by an outsourced entity.

Infrastructure as a Service (IAAS)

Infrastructure as a Service (IaaS) includes the racks, servers, power, data storage, bandwidth etc. that sits in a cloud environment and is provided as a monthly service.


A higher-capacity/performance computer that multiple people can access.

Service Level Agreement (SLA)

A service level agreement (SLA) is a contractual agreement by which a service provider defines the level of service, responsibilities and priorities and guarantees regarding availability, performance and other aspects of the service.

Software as a Service (SAAS)

Software as a Service (SaaS) is a single application or service delivered via the web or other secure manner.


A computer or terminal-like device that depends heavily on another computer to perform its processing. It looks and feels exactly like a full PC, but with all the applications, storage and computing happening on another server. This is where you commonly hear that there are just screen updates and mouse clicks happening on your local machine.

Virtual Machine (VM)

A server that can be segmented into many virtual servers or virtual machines (VM). A VM operates exactly like a dedicated server, but sits on a larger secure shared machine.

Voice over Internet Protocol (VoIP)

There are two categories of Voice over Internet Protocol (VoIP) service providers: one uses the public Internet to transport calls and is known as Internet Telephony. The second category routes voice calls over private IP networks. This enables the service provider to manage the call from end to end, ensuring voice quality and allowing the carrier to provide service level agreements (SLAs).