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(^) Small as well as some large IT companies follows the traditional methods to provide the IT infrastructure. That means for any IT company, we need a Server Room that is the basic need of IT companies. (^) In that server room, there should be a database server , mail server , networking , firewalls , routers , modem , switches , QPS ( Query Per Second means how much queries or load will be handled by the server) , configurable system, high net speed and the maintenance engineers. (^) To establish such IT infrastructure, we need to spend lots of money. To overcome all these problems and to reduce the IT infrastructure cost, Cloud Computing comes into existence.
Cloud computing decreases the hardware
and software demand from the user’s side.
The only thing that user must be able to run
is the cloud computing systems interface
software, which can be as simple as Web
browser, and the Cloud network takes care of
the rest. We all have experienced cloud
computing at some instant of time, some of
the popular cloud services we have used or
we are still using are mail services like gmail,
hotmail or yahoo etc.
In an in-house IT server, you have to pay a
lot of attention and ensure that there are no
flaws into the system so that it runs
smoothly. And in case of any technical
glitch you are completely responsible; it will
seek a lot of attention, time and money for
repair. Whereas, in cloud computing, the
service provider takes the complete
responsibility of the complication and the
technical faults.
1. Cloud offers better insight.
In a world awash in structured and, increasingly, unstructured data, 54% of leading organizations are using analytics to derive insights from big data, which helps them target customers and product opportunities more effectively.
2. Cloud helps collaboration.
Cloud allows work to be accessed from multiple devices
and from anywhere, which in turns makes it much easier for teams to collaborate on shared data.
3. Cloud drives better engagement.
We see the focus of business decision makers shift from cost efficiencies in their back-office systems to improvements in their systems of engagement, cloud is often seen as the most effective means of forging a tighter link with the customer.
4. Speed!
Fifty-two percent of leading organizations are turning to the cloud to drive more rapid innovation in products and services.
Lower computer costs:
◦ (^) You do not need a high-powered and high-priced computer to run cloud computing's web-based applications. ◦ (^) Since applications run in the cloud, not on the desktop PC, your desktop PC does not need the processing power or hard disk space demanded by traditional desktop software. ◦ When you are using web-based applications, your PC can be less expensive, with a smaller hard disk, less memory, more efficient processor... ◦ (^) In fact, your PC in this scenario does not even need a CD or DVD drive, as no software programs have to be loaded and no document files need to be saved.
Improved performance:
◦ (^) With few large programs hogging your computer's memory, you will see better performance from your PC. ◦ (^) Computers in a cloud computing system boot and run faster because they have fewer programs and processes loaded into memory…
Reduced software costs:
(^) most cloud computing applications today, such as the Google Docs suite. ◦ (^) better than paying for similar commercial software (^) which alone may be justification for switching to cloud applications.
Unlimited storage capacity:
◦ (^) Cloud computing offers virtually limitless storage. ◦ (^) Your computer's current 1 Tbyte hard drive is small compared to the hundreds of Pbytes available in the cloud.
Increased data reliability:
◦ (^) Unlike desktop computing, in which if a hard disk crashes and destroy all your valuable data, a computer crashing in the cloud should not affect the storage of your data. (^) if your personal computer crashes, all your data is still out there in the cloud, still accessible ◦ (^) In a world where few individual desktop PC users back up their data on a regular basis, cloud computing is a data-safe computing platform!
Universal document access:
◦ (^) That is not a problem with cloud computing, because you do not take your documents with you. ◦ (^) Instead, they stay in the cloud, and you can access them whenever you have a computer and an Internet connection ◦ (^) Documents are instantly available from wherever you are
Latest version availability:
◦ (^) When you edit a document at home, that edited version is what you see when you access the document at work. ◦ (^) The cloud always hosts the latest version of your documents (^) as long as you are connected, you are not in danger of having an outdated version
Requires a constant Internet connection:
◦ Cloud computing is impossible if you cannot
connect to the Internet.
◦ Since you use the Internet to connect to both
your applications and documents, if you do not
have an Internet connection you cannot access
anything, even your own documents.
Does not work well with low-speed
connections:
◦ Similarly, a low-speed Internet connection, such
as that found with dial-up services, makes cloud
computing painful at best and often impossible.
◦ Web-based applications require a lot of
bandwidth to download, as do large documents.
Stored data might not be secure:
◦ With cloud computing, all your data is stored on
the cloud.
(^) The questions is How secure is the cloud?
◦ Can unauthorised users gain access to your
confidential data?
Stored data can be lost:
◦ Theoretically, data stored in the cloud is safe,
replicated across multiple machines.
◦ But on the off chance that your data goes missing,
you have no physical or local backup.
(^) Put simply, relying on the cloud puts you at risk if the cloud lets you down.
General Concerns:
◦ Each cloud systems uses different protocols and
different APIs
(^) may not be possible to run applications between cloud based systems
◦ Amazon has created its own DB system (not SQL
92), and workflow system (many popular workflow
systems out there)
(^) so your normal applications will have to be adapted to execute on these platforms.
