by Brandon Butler

(Fill in the Blank)-As-a-Service

Feb 21, 20124 mins
Cloud ComputingSaaS

IaaS, SaaS and PaaS are the obvious as-a-service offerings, but there are plenty of others. In fact, just about every letter of the alphabet has an "as a service."

IaaS, SaaS and PaaS are the obvious as-a-service offerings, but there are plenty of others. In fact, just about every letter of the alphabet has an “as a service.”

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Access as a service

Access as a service, or AaaS, is related to cloud security and specifically how users gain access to it, explains.

AaaS can also mean authentication as a service, which also refers to cloud security, and a single- or two-factor authentication system to access cloud data.


Backup as a service

Businesses such as Symantec and Verizon allow service providers to offer backup as a service.


Compute as a service

AT&T offers compute as a service, meaning computing capacity on an as-needed basis for enterprises.


Database as a service

Forrester noted the term in a 2008 report.

It can also mean desktop as a service, which Dell offers.


Email as a service

Also known as webmail, of course, the federal government experimented with using the term.

EaaS can also refer everything as a service, which is how HP describes its cloud strategy.


Firewall as a service

Coined to describe cloud security, as the Trend Cloud Security blog explains.


Google platform as a service

ZDNet has a reference guide for the difference between the Google PaaS and Amazon’s model.


Hardware as a service

An early term for infrastructure as a service, now offered by providers such as AWS. Some providers still use the term, though, such as Skyrope and Equus.


Infrastructure as a service

A variety of providers use the term IaaS.


Java platform as a service

A type of application development, as IBM describes here.


Knowledge as a service

Used to describe a crowd-sourcing model, as Silicon Republic blog describes., the major SaaS provider, also describes KaaS in its cloud offering.


Log on as a service

Log on as a service can either refer to a Windows command or it can refer to cloud security.


Management as a service

Management as a service can take many forms, including cloud security, as described by Verizon.

Also, you might see marketing as a service, which is just that, explains the CRM Search blog.

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Network as a service

Cisco used the term to describe its open stack offering.


Open platform as a service

Open platform as a service is a way to describe PaaS offerings that are open source, as described here.


Platform as a service

Used to describe a cloud-based application development and testing model.


Query as a Web service

A product by SAP used by business enterprises.


Robot as a service

RaaS is a term used by Intel in a white paper to describe service-oriented robotics computing.


Software as a service

A widely used term to describe cloud-based software that is accessed via the network.


Testing as a service

HP offers testing as a service for application developers to test their research.


User interface as a service announced in 2007 its user interface as a service model, which it describes here.


Video surveillance as a service

Video surveillance as a service is an emerging trend in the SaaS market, as a CSO report explains.


Website as a service

A number of providers offer website as a service.


X as a service

As the blog describes it, XaaS means anything as a service.


You as a service

As this study points out, a variety of cloud-based initiatives can be classified as you as a service.


Zebra as a service

Not yet an enterprise IT term, sales firm Selling to Zebras is attempting to make it one.

(Note: This list is not meant to be all-inclusive; if you have suggested additions to the list, send them to

Network World staff writer Brandon Butler covers cloud computing and social media. He can be reached at and found on Twitter at @BButlerNWW.