Everything as a service

Everything as a service(EaaS, XaaS,eWeek November 5 2007  *aaSGang up before the *aaS cloud gets you) is a concept of being able to call up re-usable, fine-grained software components across a network. It is a subset of cloud computing. The most common and successful example is software as a service (SaaS), but the term as a service has been associated and used with many core components of cloud computing including communication, infrastructure, data and platforms.

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Key characteristics
Offerings tagged with the as a service suffix have a number of common attributes, including:
 Low barriers to entry is a common method of offerings, with services typically being available to or targeting consumers and small businesses.
 Little or no capital expenditure as infrastructure is owned by the provider.
 Massive scalability is also common, though this is not an absolute requirement and many of the offerings have yet to achieve large scale.
 Multitenancy enables resources (and costs) to be shared among many users.
 Device independence enables users to access systems regardless of what device they are using (e.g. PC, mobile,...etc.).
 Location independence allows users remote access to systems.

 Sub-categories 
This kind of services can be divided into more specific types:

 Software as a Service (SaaS)
 Platform as a Service (PaaS)
 Infrastructure as a Service (IaaS)

Related pages
 Cloud computing

References

Category:Cloud computing