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

• How Cloud Computing Works - YouTube.com
• The Three Ways to Cloud Compute - YouTube.com
• Cloud Computing - Wikipedia.org
• Adobe Creative Cloud
• Cloud Computing - tutorialspoint.com
• thecloudtutorial.com