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CLOUD COMPUTING

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Jiji M John

Librarian

PM Shri K V Adoor Shift I

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Basic Concept

JIJI M JOHN, Librarian, PM Shri K V Adoor Shift I

After Cloud Computing

Hire resources owned by others, paying for only what you need.

Before Cloud Computing

Doing everything on your own with resources you purchase.

  • On-site
  • Too Expensive
  • Wastage of Resources
  • Unnecessary Burden
  • Off-site
  • Cost effective
  • Work without extra diversions
  • Easy expansion and downsizing

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What is Cloud Computing?

An approach to computing in which the end user connects to a remote network of computers (the cloud) in order to run programs, store data, etc. This enables users to access large amounts of data storage and computing power from anywhere in the world without having to own and maintain these resources themselves.

(Oxford Dictionary of Computer Science, 7th Ed.)

JIJI M JOHN, Librarian, PM Shri K V Adoor Shift I

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Cloud Computing: Operations

JIJI M JOHN, Librarian, PM Shri K V Adoor Shift I

OPERATIONS PERFORMED IN CLOUD COMPUTING:

  • Storage, backup, and recovery of data
  • Delivery of software on demand
  • Development of new applications and services
  • Streaming videos and audio

When a company chooses to "move to the cloud", it means that its IT infrastructure is stored offsite, at a data center that is maintained by the cloud computing provider.

“The Cloud” is actually the Internet.

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Cloud Computing: Characteristics

JIJI M JOHN, Librarian, PM Shri K V Adoor Shift I

  • On-demand self-service
  • Resource pooling
  • Scalability and rapid elasticity
  • Pay-per-use pricing
  • Measured service
  • Resiliency and availability
  • Security
  • Broad network access

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Cloud Computing: Types

JIJI M JOHN, Librarian, PM Shri K V Adoor Shift I

Public Cloud – Providing cloud services to public. Pay-as-you-go billing service. Meant to serve multiple users.

Private Cloud – Dedicated to a single organization. Also known as corporate Cloud or Internal Cloud. IN this all Cloud resources are accessible to one customer only.

Hybrid Cloud – A mixture of Public and Private Cloud. In this storage the critical data is stored in the enterprise's private cloud while other data is stored a public cloud storage provider.

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Cloud Computing: Models

JIJI M JOHN, Librarian, PM Shri K V Adoor Shift I

SaaS (Software as a Service) - In which applications or software is delivered as a service to the customer. Software is hosted remotely and customers need not install it locally or worry about its maintenance and update. Email services, communication software, online games, etc. come under this category.

PaaS (Platform as a Service) - Computing platform is provided to customers who develop Web based applications. In this hardware, operating systems, storage and network capacity are hired over the Internet.

IaaS (Infrastructure as a Service) - Cloud computing infrastructure servers, storage, network and operating systems are delivered as an on demand service. Maintenance and upkeep of infrastructure done by the Cloud providers and customer companies simply hire the infrastructure.

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Cloud Computing: Key Players

JIJI M JOHN, Librarian, PM Shri K V Adoor Shift I

AWS Inc, a subsidiary of Amazon, is the #1 leader in cloud infrastructure and platform services. It was established in 2006.

Oracle is a fast growing company in the field of cloud computing.

Google Cloud entered the field in 2008 and has become a leader in this arena.

Azure Microsoft was launched in 2010.

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Cloud Computing: Impact on Libraries

JIJI M JOHN, Librarian, PM Shri K V Adoor Shift I

  • Cost Reduction
  • Time saving
  • Portability
  • More efficient service to clientele
  • Adjustable storage
  • Cloud OPAC

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Cloud Computing: Pros and Cons

JIJI M JOHN, Librarian, PM Shri K V Adoor Shift I

  • Cut down on expenditure – On an average, 15% of the cost can be cut down.
  • Time saving – Companies don’t have to worry about server maintenance and 24x7 power supply. The can concentrate on other important things.
  • Portability – Data can be accessed from anywhere in the world.
  • Adjustable storage – Data storage can be increased or decreased as per need.
  • Automatic Maintenance and Updates

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  • Dependency on Internet Connectivity – No Internet, no cloud.
  • Downtime and Reliability
  • Cost Management Complexity – Without proper careful monitoring and utilization of resources optimization, Organizations may end up with unexpected costs as per their use scale.

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References

JIJI M JOHN, Librarian, PM Shri K V Adoor Shift I

  • Impact of Cloud Computing on Librarians at Small and Rural Academic Libraries/ Deborah Deloise Tritt and Kaetrena D Kendrick, 2014
  • Oxford Dictionary of Computer Science, 7th Ed./Andrew Butterfield (Ed.), 2015
  • https://www.knowledgehut.com/blog/cloud-computing/top-cloud-computing-companies
  • https://www.youtube.com/watch?v=pidVLkQQom8

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