3)
Aml.. IT infrastructure IS
Saturday, December 29, 2012
The cloud computing
In today’s globalized and volatile times,
more than ever, it is necessary for businesses
around the world to secure their
competitive advantage. Companies must leverage
their core competencies and be agile enough
to evolve with the environment,
especially in IT.
Cloud computing is a collection of
Internet-based or private-network services providing
users with scalable, abstracted IT
capabilities, including software, development
platforms and virtualized servers &
storage. Although not new as a concept, Cloud
computing is new in its generalized
application to all IT services and is the next step
in the relentless journey of corporate IT.
Given its profound impact, Cloud computing cannot be ignored.
Defining
the Cloud
The Cloud is a collection of
internet based or private network
Services providing users with
scalable, abstracted IT capabilities, including software, development platforms
and virtualized servers
&
storage..
These characteristics are the basis of our
definition of Cloud computing: The Cloud
is a collection of Internet-based services
providing users with scalable, abstracted IT
capabilities,
including Software, Development Platforms and Hardware.
Where
has the Cloud come from?
The Cloud is not as new as it
seems. The Cloud symbol that permeates virtually all
Cloud computing literature is
more than 50 years old, as indeed are the concepts
that were recognized as early
as the 1950s in the work done by AT&T in the area of
telephony networking.
At that time, AT&T had
already begun to develop an architecture and system where
data would be located centrally
and accessed by businesses through redesigned
telephones and an updated
telephone network. While the service did not materialize,
the concepts and advantages were
understood and relentlessly pursued through to
this day.
The pursuit of centralized,
abstracted IT services progressed over the decades with
the advent and adoption of
technologies such as Internet Service Providers (ISP –
where servers were located at the
Internet access point), and Application Service/
Infrastructure Providers (ASP –
where infrastructure was rented to a customer at an
offsite location, but used most
of the time by the one, paying customer). Other IT
services historically offered
include Time Sharing Systems, Co-Location, Hosting, and
Outsourcing.
As with any evolution, the step
from ASP to Cloud computing is subtle yet disruptively
important. While ASPs managed
the offsite infrastructure for a customer, they
were bound to the concept that
the infrastructure capacity was predetermined
and inflexible; ASP customers
were required to declare the quantity of compute
and storage capacity needed up
front. If the customer’s computing needs grew or
contracted, the hardware had to
be scaled up or down with an associated delay and
up-front investment.
One of the main principles of
Cloud computing, from Software-as-a-Service to Storage
on demand, is that the
computing capacity varies immediately and transparently with
the customer’s needs, and
clients no longer must plan, configure, and deploy fixed
quantities of computing
equipment, with associated costs, lead-times, and financial
risks.
Indeed, from this evolution we
find ourselves at the cusp of a significant
transformation in Information
Technology. Companies that are knowledgeable and
prudently adopt Cloud computing
will recognize significant benefits, while those that
do not will be left ‘a step
behind’ and see their competitors pull ahead as a result of
lower operational costs and increased flexibility and deployment
capabilities.
Where is
the Cloud today?
Cloud computing encompasses an
increasingly broad array of uses deeply embedded
in both our personal and professional lives,
with the distinction not always very clear:
Personal applications of Cloud
computing provide the most universally accessible
understanding of the Cloud.
With the common acceptance of applications like Gmail,
Hotmail, Facebook, MySpace we
are already familiar with the advantages. Indeed,
Gmail, to take but one example,
offers virtually limitless space to its users, to whom
the details of the underlying
software and hardware are completely and purposefully
obscured.
Consumer Cloud applications
were born out of the dot-com bubble at the turn of
the century and have matured
into fully accepted services connecting consumers to
buyers. These former start-ups,
such as Google, eBay and Amazon, have become
leaders in the Cloud computing
industry and are poised to expand into and dominate
the Business Cloud application
market.
Business Cloud applications
were carried to the CXO’s attention with the advent,
growth and acceptance of
companies such as salesforce.com and NetSuite. Business
Clouds, which deliver business
value with a reduced IT footprint, are poised to change
the way enterprises deploy and
manage their IT assets and business processes
main characteristics.
Alternatively, we can examine the issues
that we take as ‘necessary evils’ surrounding today’s enterprise IT
landscape. We are all familiar with the IT
stack of large enterprises, which typically contains business-facing Software
applications (e.g. Oracle, SAP, Microsoft),
development platforms used by developers to build custom applications
(e.g. Microsoft .Net, Java, C/C++, COBOL)
and the underlying Infrastructure (storage, servers, network) upon which
the Software and Platforms run.
With most of these IT capabilities being
conceived, set up and managed on the company’s own premises, we have
accepted the inherent effort and challenge
required to ‘keep it all running’.
In other words, we have learnt to live with the fact that
our enabling IT requires our having to put up with a host of
cumbersome necessities. The power of Cloud
computing becomes clear when we imagine not having to invest the
time and resources to accomplish many of
the tasks we now take for granted, as illustrated in the figure below.
Cloud
families
The following figure depicts these three
Cloud families, with leading players and emerging sub-families.
Other groupings of Cloud offerings can be
made such as the distinction between public (or vendor), private,
and hybrid Clouds.
Essentially, these differentiate the degree
to which Cloud computing is externalized from the organization. While the
optimal cloud computing architecture will
depend on the specific business needs of the client and the capabilities of
the client’s technology, today, only the
largest organizations can hope to leverage true benefits using private Clouds
exclusively.
Drivers and inhibitors
Cloud
computing has clear advantages – capitalizing on these and
overcoming
remaining inhibitors will allow its mainstream adoption.
Cloud computing exhibits
obvious advantages linked to its characteristics:
• The pay-as-you-go model and
multi-tenancy lead to increased ROI with quicker
payback and lower upfront
investment
• High abstraction and
immediate scalability lead to accelerated deployment, greater
flexibility, and greater focus on core competencies.
Cloud providers can be classified into 3 different
families: SaaS - PaaS - IaaS, with each family divided into sub-segments.
Wednesday, October 3, 2012
Peace
be upon you and God's mercy and blessings
I welcome you to my blog..
I welcome you to my blog..
My
name is Aml Alhosien, I am a student in
Taibah University, , Faculty of Computer Science and Engineering, in Information
system major. I like to doing more of thing on PC such as search about games program,
a new program to edit pictures & videos, reading about cooking, fashion, social
relationship & show videos in crochet..
About
what I am studied a computer section: ICDL, introduce in computerized, fundamentals
of IS, C++ & Java programming language & analysis & design IS. I
hope to be a teacher of computer, I would like to learn everything about a computer
science to help myself & the other . The happiness thing university is wonderful
section of friends & some of teachers were given us Superb skills..
Once more welcome to you in my blog & I
hope to share helpful & value information,, with all my respect of your opinions…
Thanks ^_^
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