By: Kathleen Walters

CLOUD COMPUTING

DefinitionCloud computing allows

multiple computers to connect to one main network. Instead of installing different types of software or storage devices, one is able to access needed services through one type of application. Many different

types of businesses and workplaces use cloud

computing. This allows each person to access needed

programs by simply logging on to a certain application, such

as the Internet.

Cloud Computing Video Clip

History of Cloud Computing• 1961- John McCarthy first to publicly announce idea computer

applications

• 1999- Salesforce.com develops idea into a model

oTerm “cloud computing” used because flow charts represented Internet as cloud symbol

• 2002- Amazon provides storage, human intelligence, computation

• 2006- Amazon introduces Elastic Compute cloud (allows companies to rent computers to run applications)

• 2009- Web 2.0 gains attention and providers begin to offer browser- based applications

• Today- Businesses and companies utilize this method to increase profits and decrease work loads

Structure of Cloud Computing

• Front EndoSide that the client/ user viewso Includes user’s computer and

application used to access network

• Back Endo “Cloud” section of structureo Includes computers, severs, and

data storage systems

Two sections connect to one another to form computer

“cloud.” Sections connected by a network, such as the Internet.

Models of Cloud Computing• Public Cloud- Operated by third parties. Services and resources offered to the general public with “pay- as- you- go” rate.

• Private Cloud- Offered to one business and provides greater control and security.

o On- Premise Private Cloud “Internal cloud” – Hosted within one’s data center, but is limited in size and scalability.

o Externally Hosted Private Cloud- Hosted by external cloud providers, user has access to private cloud environment with full privacy.

• Hybrid Cloud- Combine services of public and private clouds. Allows more flexibility and allows management of services provided by third parties.

Cloud Computing ServicesInfrastructure as a Service

1.) Backbone of services2.) Provides storage, security, CPU power, security, databases,

servers3.) Service Providers: Amazon Web Services,

Rackspace Cloud Servers, 3 Tera, GoGrid

Software as a Service1.) Software for

“rent,” user utilizes different services but does not own service

or software2.) Service provider

offers one application that can be shared

and used by specific database

3.) Service Providers: Gmail, Google Docs,

Salesforce.com, acrobat.com

Platform as a Service1.) Allows systems to

be upgraded and changed in a quick

process2.) Provides platform

on which to create higher level

applications or services

3.) Service Providers: Azure Service

Platform, force.com, Google App Engine

Internet Required

Top 10 Service Providers for 20101.) Amazon Web Services

2.) Microsoft Windows Azure

3.) Savvis

4.) GoogleApp Engine

5.) VMware vCloud

6.) Rackspace

7.) Verizon

8.) GoGrid

9.) Force.com

10.) AppNexus

Advantages1.) Clients can access applications anywhere there is Internet connection.

2.) Hardware costs decrease for businesses.

3.) Space and money saved. Workplaces do not rent physical space to store databases and servers.

4.) Companies pay one fee to a company.

5.) Allows workplaces quick access to needed applications.

Drawbacks

1.) Allows another business access to important files.

2.) Could reduce or diminish need for computer repair and maintenance.

3.) Some governments do not allow customer information to be located outside state or country.

4.) If cloud provider neglects maintenance or recovery, could lead to extreme losses for business.

5.) Requires Internet connection. If one is unable to connect to Internet, can not access important files or information.

1.) Providers work to ensure reputations are positive. If provider is not reliable, they will lose clients.

2.) Workers will be able to work at the “back end” of this system.

3.) Prevention of this issue includes user names and passwords.

4.) Again, service providers work to ensure that all clients are served and gain clients based on reputation.

5.) Only requirement of model. Most workplaces have access to the Internet.

Disadvantages Counterarguments

Cloud Computing in Relation toEducation

How does this apply to you as a future educator?The school district in which you may work might utilize cloud computing. It is important that you have some knowledge in this area so that you will be able to use and understand this

tool.

Education Video Clip

Resources and References• How Cloud Computing Works

Strickland, J. (2008, April 8). How cloud computing works. Retrieved from http://communication.howstuffworks.com/cloud-computing.htm

• Understanding Public, Private, and Hybrid CloudsNolan, J. (2010, October 7). Understanding public, private, and hybrid cloud infrastructures . Retrieved from http://www.eci.com/blog/59-understanding-public-private-and-hybrid-cloud-infrastructures.html

• A History of Cloud ComputingMohamed, A. (2009, March 27). A histroy of cloud computing. Retrieved from http://www.computerweekly.com/Articles/2009/06/10/235429/A-history-of-cloud-computing.htm

• Cloud Computing: An OverviewHarris, T. (n.d.). Cloud computing: an overview. Retrieved from http://www.thbs.com/pdfs/Cloud-Computing-Overview.pdf

• What is Cloud Computing?What is cloud computing? (2010, April 5). Retrieved from http://searchcloudcomputing.techtarget.com/sDefinition/0,,sid201_gci1287881,00.html

• SaaS, the Cloud and the FutureGiurata, P. (2010, September 22). Saas, the cloud and the future. Retrieved from http://www.catalystresources.com/saas-blog/saas_the_cloud_and_the_future/