Put simply, cloud computing refers
to a network of computer resources that are located just about anywhere and,
for a price, part of this can be yours- short or long term.
The concept of SaaS running in the
cloud has actually been around for a long time. With personal email such as
Hotmail, being a well known example of SaaS that has been going since 1996,
with 400 million accounts worldwide.
The approach can be compared to
the potential flexibility of using public transport rather than committing to
buying a car - you can choose a different mode of transport depending on your
needs for the journey. A train could be faster, a bus could be cheaper and
everyone sharing could potentially be more efficient and green.
Services might not run exactly
when you’d like them to; they won’t get you right to the door; they could be
less reliable; or in reality you might find yourself in a taxi (private cloud)
every time, paying more for the luxury!
There are a lot of things to take
into consideration, including remembering that just as owning a car doesn’t
stop you from catching a train when it suits, the use of SaaS is not an all or
nothing situation.
Despite clouds gathering on the
horizon and talk of a government G-Cloud forecast to rain change on the public
sector, it seems clear that we are likely to continue to host some applications
in the foreseeable future, but that cloud computing is also genuine option for
others.
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