140741484 Cloud Computing

7/28/2019 140741484 Cloud Computing

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The monsoon is still two months away atleast,but the cloud is hot news!!!

No,no,it is not about the rains..


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Cloud computing is the useofcomputing resources (hardware and

software) that are delivered as a service overa network (typically the Internet).

The name comes from the common use of a

cloud-shaped symbol as an abstraction forthe complex infrastructure it contains insystem diagrams. Cloud computing entrustsremote services with a user's data, software

and computation.
http://en.wikipedia.org/wiki/Computinghttp://en.wikipedia.org/wiki/Computer_networkhttp://en.wikipedia.org/wiki/Internethttp://en.wikipedia.org/wiki/Internethttp://en.wikipedia.org/wiki/Computer_networkhttp://en.wikipedia.org/wiki/Computing


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STORE FILES : You can use memory resting inremote computers to store files includingdocuments,pictures,songs and videos.Siteslike Box.net and Dropbox.com help you to dothat.

There was a time when we stored our data

files on floppy disks and CDs. Suddenly,storage is all-too-easy and

cheap,because it is on the Web.

Now,there is Box.net or a Dropbox that store

files and help you switch easily between yourlaptop storage and cloud storage.


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Email: Remember Hotmail? That and Gmailare nothing but Email applications on thecloud.

Whether you are using Gmail,Yahoo Mail orOutlook.com,the email is stored on the cloud.

The front end-The Website that you visit-connects you to the cloud,where the data isstored,which is the back-end.

Your email is served from the nearestserver,depending on your location.

This is an example of both cloudcomputing(exchanging messages,taggingthem) and cloud storage(saving messages)


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Be Entertained: Youtube and such sites arejust movie halls on the cloud.When you watcha video on YouTube,you have cloud serversat the back-end streaming your favourite

video.

Sites such as Saavn.com and Hungama.comlet you stream music for free in a similarmanner.


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Run an Office: The familiar Microsoft Officesuite is now available on the cloud asOffice365.Google has its ownDocs(http://docs.google.com) that offers

comparable features.Zoho.com provides ahost of office software.Business software likeSAP and accounting software like Tally arealso available on the cloud.
http://docs.google.com/http://docs.google.com/


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Do Advanced Computing: Even 3D prototypemaking,needing advanced graphiccomputing,can be made cheaper!


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Cloud computing providers offer theirservices according to several fundamentalmodels:

Infrastructure as a service (IaaS)

Platform as a service (PaaS)

Software as a service (SaaS)


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In this model, a pre-made application, alongwith any required software, operating system,

hardware, and network are provided.

For ex-Microsoft Office 365,Google Apps


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In PaaS, an operating system, hardware, andnetwork are provided, and the customerinstalls or develops its own software andapplications.

Application developers can develop and runtheir software solutions on a cloud platformwithout the cost and complexity of buyingand managing the underlying hardware and

software layers.For ex-Google App Engine,Windows Azure

Cloud Services


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The IaaS model provides just the hardwareand network; the customer

installs or develops its own operatingsystems, software and applications.

Cloud providers typically bill IaaS services ona utility computing basis

For ex-Google Computing Engine ,Oracle

Infrastructure as a Service.


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Cloud services are typically made available viaa private cloud, community cloud,

public cloud or hybrid cloud


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In a private cloud, the cloud infrastructure isoperated solely for a specificorganization, and is managed by the

organization or a third party In a community cloud, the service is shared

by several organizations and madeavailable only to those groups. The

infrastructure may be owned and operated bytheorganizations or by a cloud service provider.

A hybrid cloud is a combination of different

methods of resource pooling (forexample, combining public and community

clouds).


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Cloud architecture, the systemsarchitecture of the software systems involvedin the delivery of cloud computing, typicallyinvolves multiple cloud

componentscommunicating with each otherover a loose coupling mechanism such as amessaging queue. Elastic provision impliesintelligence in the use of tight or loosecoupling as applied to mechanisms such asthese and others
http://en.wikipedia.org/wiki/Systems_architecturehttp://en.wikipedia.org/wiki/Systems_architecturehttp://en.wikipedia.org/wiki/Software_systemshttp://en.wikipedia.org/wiki/Software_systemshttp://en.wikipedia.org/wiki/Systems_architecturehttp://en.wikipedia.org/wiki/Systems_architecture


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As long as you have an internetconnection,you can hook up to a cloudservice and get storage ultra-cheap.Somesites offer basic stuff for free.

Basic facilities on paid sites cost around$10(Rs 500 a month).


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Good Bandwidth is critical Files moving in the cloud,if not secure,lose

confidentiality

Data may be vulnerable to intruders


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Simple,log on to sites that offer cloudfacilities.You can sign up and pay onlinewhere it not free.

DropBox.com,Zoho.com,Box.net,Docs.google.com,Office365.com,Outlook.com,Tally.comare cloud sites.


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If we did not have cloud computing,socialmedia networks like Facebook,Twitter wouldhave remained small and localised,limited tocommunities.

Social media networks have become a greatexample of cloud computing and storage.


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The flip side of the cloud computing is thesafety!

If your files are not physically in yourcontrol,it is vulnerable to someone hacking it.

Most of the data you store on the cloud isaccessed by a username and password.

Typically,the username is your email id.,whichis known to others.

But your password is the key to your soundsleep:the more complex it is,the tougher itbecomes to crack it.

Documents

140741484 Cloud Computing