Cloud Computing is a form of computing in which all applications, information and resources are managed in a virtual environment. The term cloud computing, specifically the use of the word "cloud", it meant to represent the nature and structure of cloud computing. Cloud computing involves virtual hosted environments allowing users to connect to the services being hosted over the internet.
2. Cloud Computing is a form of computing in which all applications, information and resources are managed in a
virtual environment. The term cloud computing, specifically the use of the word "cloud", it meant to represent
the nature and structure of cloud computing. Cloud computing involves virtual hosted environments allowing
users to connect to the services being hosted over the internet.
Google Apps is a great example of cloud computing as companies to no longer require the need for installed word
processing software, in house email servers, multiple IT personnel and many more cost saving advantages.
Google Apps allows companies to access all services including email, website hosting, calendar, document
editing/creation and much more directly through a web browser. The advantage to using Google Apps is
increased productivity, security, lower IT costs and data backup. Microsoft has also entered the cloud computing
realm by integrating its current software such as Word and outlook with online storage and easy accessibility.
Many hosting companies and even a few internet retailers are beginning to offer cloud hosting services.
Rackspace, an internet hosting company, has begun to offer cloud hosting for clients who wish to have personal
cloud applications in an environment controlled by them. Amazon.com is also offering cloud hosting services due
to its large infrastructure and internet bandwidth capabilities. Most cloud hosting companies offer easy setup and
creation of private cloud hosting with simple user interfaces. Most cloud hosting companies have per usage
pricing instead of flat rate pricing. Users simply pay for the amount of processing, bandwidth and storage that
they use. This pricing method benefits both cloud hosting companies and end users.
3. There are three main variations of cloud computing:
IaaS (Infrastructure as a Service): The need for expensive equipment is outsourced. Instead of companies
purchasing expensive equipment including servers, hard drives and networking equipment, they would instead be
used over the Cloud and hosted by a cloud computing company. The business entity would use the virtual
equipment on a cost usage basis.
PaaS (Platform as a Service): Applications are run off of cloud servers hosted virtually. A small company selling
cloud applications to businesses will use PaaS to "host" the sold cloud applications and have them run off of the
cloud servers instead of having them run off of in-house servers. The company selling the applications pays for
the services based on a processor/bandwidth basis.
SaaS (Software as a Service): Cloud applications are paid for on a per use basis and not sold in bulk licenses. This
allows small companies to purchase a la carte licensing for applications they may use infrequently. Instead of
purchasing 15 licenses a company can instead only pay when the software is used and removing the limits on
how many machines the software can be installed on.
IaaS, Infrastructure as a Service, is currently the most widely used cloud service. IaaS allows small, medium and
even large companies to cut costs considerably. Companies can completely remove the need for expensive
network equipment, expensive bandwidth to support their network, expensive network storage equipment and
much more. A company only pays for what they use from the cloud infrastructure thus eliminating the capital lost
due to lack of usage from in house network equipment, bandwidth, etc. As IaaS gains more popularity and more
cloud hosting companies emerge, costs can potentially drop even more due to oversupply and increased cloud
hosting competition.
4. PaaS, Platform as a Service, is second to IaaS in terms of popularity and consumer adoption. A small company
selling cloud applications and/or cloud services does not have to host the applications but can instead have them
hosted elsewhere. Platform as a Service saves the company selling the applications/services as expensive
network equipment, bandwidth and the need for additional IT personnel are instead outsourced to a cloud
hosting company. This allows cloud application companies and even small developers the ability to enter the
cloud application market without the need for considerable startup capital. PaaS has the potential to overtake
IaaS in terms of consumer adoption and overall use.
SaaS, Software as a Service, is the least used cloud hosting service. It is a win-win for both consumers and the
software companies. Consumers save money as heavily priced software licenses are no longer necessary due to
the fact that consumers are only paying when the software is used. The need to purchase software in bulk is
removed and every consumers' software needs are custom suited based on usage. This is also a win for cloud
software companies as it will attract more consumers due to the custom pricing model. Consumers who could
not afford the high cost of bulk software licenses will now be able to purchase based directly on their software
usage needs. SaaS has the potential to completely revolutionize the software industry and may even curb
software piracy.
The customized nature of cloud computing is what makes it such a popular and newly adopted internet
technology. It will revolutionize the way that networking and everyday computing is run. It is a great win-win
situation for both cloud companies and consumers.
5. Potential Disadvantages
There are also disadvantages to cloud computing, specifically in online storage and client applications. A
company which utilizes cloud computing to host its email, document editing, calendars and other applications
can be shut down if a cloud hosting company experiences downtime. This specific disadvantage was the case on
February 24th, 2009, when Google Apps as well as Gmail were down for several hours. The downtime also
reiterated that if Google can go down so can any other hosting companies. Confidence in cloud computing may
have been hindered after this specific downtime although Google has assured it will not happen again. Google
Apps services over 1million business around the world and is the leader in cloud computing applications.
Security is also a potential disadvantage to cloud computing. Companies that are willing to adopt the ability to
host their services on the cloud may be reluctant to do so until the security of cloud computing has been heavily
demonstrated and thoroughly tested. Large companies may consider the additional costs of in-house network
hosting outweigh the potential security risks associated with cloud hosting. A security breach involving a
companys' cloud information storage has the potential for disaster. However, hacking and security breaches are
rampant for in-house IT hosting such as millions of credit card numbers being stolen as well as detailed customer
information. If cloud computing can prove that its security is much better than any in-house hosting this may help
it to grow and overtake the percentage of companies that have in-house IT infrastructures.
6. Cloud computing is still in its infancy and is expected to grow and revolutionize the way of everyday computing.
Many theorize that cloud computing will one day take over today's desktop computing altogether. Until intense
applications are developed for use over the cloud, desktop computing will remain the staple of everyday
computing. Cloud computing innovation is rapid and as new cloud technologies emerge more people will start to
adopt the cloud.
Current browser technologies are not up to date with cloud computing capabilities, especially in the mobile
computing world. Cloud applications require several browser technologies including Adobe Flash, JavaScript,
Adobe Flex and much more. Until browser technology evolves to fit the capabilities of cloud computing, cloud
computing will remain a relatively simple method of computing.
Overall Benefits
The advantages of the cloud heavily outweigh the disadvantages. As better cloud computing technologies are
developed and redundancy is fine tuned, the disadvantages will slowly become obsolete. As mentioned, cloud
computing is in its infancy and new cloud technologies are growing exponentially. One day we will all use the
cloud. In-house IT hosting as well as desktop computing may become a thing of the past.
