Cloud & Cloud Computing

Why is the name Cloud?
  • Cloud in general
    Accumulation of objects at a place
  • Cloud in Computing
Collection of servers

What is Cloud computing?

The storing of data and application on remote servers.
Accessing your data and application via internet rather than installing them on your PC or office computer.
  • Data on Cloud
Example: Google drive, iCloud, Dropbox, SkyDrive
Figure 1. Image Courtesy: MIS CENTRE
  • Application on Cloud
Example: Wordpress, Drupal, Zoomla, mySql
 Figure 2. Image Courtesy: onefootinreality.com

Cloud and a Photographer
  • Without Cloud
  1. Photographer takes photos using his camera
  2. Moves to his office
  3. Connects his camera to his workstation (with good configuration)
  4. Copies the files, edit it.
  5. Takes edited copy to a photo lab to get it printed.
  • With Cloud (Example: Adobe’s Creative Cloud)
  1. Photographer takes photos using his android camera
  2. Automatically uploaded to the Creative Cloud (Adobe)
  3. Logs in his online cloud application (Photoshop) using a web browser or a middleware (Creative Cloud)
  4. Edits the uploaded photo and Print using Google Cloud Print
Figure 3. Adobe’s Creative Cloud

More about Cloud
  • Types
  1. Public Cloud
  2. Private Cloud
  3. Hybrid Cloud
  • Services Provided
  1. Infrastructure as a Service (IaaS)
  2. Platform as a Service (PaaS)
  3. Software as a service (Saas)
  • Cloud Types and Services
Figure 4. Image Courtesy: HCL Technologies

Some Cloud Service Providers
Example: Google Compute Cloud, Salesforce, Microsoft Azure, Amazon Elastic Cloud, Rackspace
Figure 5. Image Courtesy: Sam Johnston for Wikipedia
Pros & Cons
  • Pros
    • Scale and Cost
    • Choice
    • Redundancy
    • Disaster Recovery
    • Increased flexibility
  • Cons
    • Internet connectivity is essential
    • Security & Privacy
    • Lack of Control and Ownership
References

Disclaimer:
The above article doesn't give you any guarantee and the sole purpose of this article is to share my learning in the way I understood. Any comments to refine this article are welcome with great pleasure. Please report any breaking link by commenting below.

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