In Public Cloud the computer infrastructure is hosted by the cloud vendor at the vendor’s premises. The customer has no visibility and control over where the computer infrastructure is hosted.
The computing infrastructure is shared between any organizations.
Visibility: see who’s connected to the network
Private cloud
The computing infrastructure is dedicated to a particular organization and not shared with other organizations.
Private clouds are more expensive and more secure when compared to public clouds.
Used to be called your company network
Hybrid cloud
Organizations may host critical applications on Private Clouds and applications with relatively less security concerns on the Public Cloud
The usage of both Private and Public clouds together is called Hybrid cloud. A related term is Cloud Bursting
Cloud Bursting
Organizations use their own infrastructure for normal usage, but access the cloud using services like Salesforce cloud computing for high/peak load requirements
This ensures that a sudden increase in computing requirement is handled gracefully
The public cloud brings simplicity, while private cloud means better privacy, but hybrid cloud combines the best of both worlds
Best of both worlds: mobile and web-based access to corporate applications with high usability
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What’s a personal cloud?
Personal Cloud
Is the individual’s collection of digital content, services and apps which are seamlessly accessible across any device
The personal cloud is not a tangible entity, but rather the realization of four different types of experiences in which some users store, synchronize, stream and share content on a contextual basis, moving from one platform, screen and location to another.
Google drive, dropbox, etc.
Three major components to personal cloud
Data
You decide which data to store, which to delete or modify
While your data is accessible over the network, nobody can access or use your data without your permission
You device which data you share with whom and when to revoke that privilege
Apps
You decide which apps from which vendors to use with your data
Terms
You define your own terms of service for anybody interacting with the data or the apps on your personal cloud
You can easily move your personal cloud to a competing hosting vendor if you so desire
