There are three types of cloud available: Public Cloud, Private Cloud and Hybrid Cloud. Public cloud computing, what we hear the most is where Amazon EC2, Microsoft Azure, and Google Apps come to mind. But whether it is the right model depends on the criticality of your application and infrastructure requirements. It may work for some of your computing needs, but if you feel more comfortable to have your computing resources inside your own firewalls, then private cloud computing is the right answer. That’s what enterprises tend towards when they have a large user base and they are concerned about the data, security and latency.

1. Whitepaper
Public and Private Cloud
What does your business need today?
WOLF Frameworks

2. Public and Priv ate Cl oud
Contents
Abstract
Types of Cloud
Public Cloud Interfaces
Private Cloud Interfaces
Cloud Data Security
Cloud Selection Criteria
Developing Application using WOLF Platform-as-a-Service
Flexibility of deploying WOLF based Cloud Applications
Conclusion
References
2|Page

3. Public and Priv ate Cl oud
Abstract has no access, visibility or control of it. It is shared by
multiple organizations. Public cloud definitely reduces the
Public Cloud and Private Cloud are the two most common overhead of infrastructure management but at the cost of
terminologies floating around in this new IT buzz called control.
Cloud Computing. There is no denying that the use of Cloud
is on the rise. Though the cloud boasts a number of Private Cloud - Private cloud is owned by a single
advantages there are certain concerns that are hampering organization and is not shared by anyone else. They are
its adoption. In this whitepaper we have discussed about dedicated resources and may be hosted on-premise or off-
the various types of Clouds available to your disposal and premise in a third party vendor location. Though Private
why should you select one. We have also discussed about cloud gives you a control over the resources, it leaves you
the key concerns of cloud adoption and how you can with an overhead to manage it.
minimize the risks. Finally we have given a brief insight on
Hybrid Cloud - A Hybrid Cloud is a combination of Private
the flexibility of the WOLF cloud deployment methods.
and Public cloud. Such as, when an organization uses a
Types of Cloud Private Cloud for secure applications and a Public Cloud
during peak load, the usage is called a Hybrid Cloud.
There are three types of cloud available: Public Cloud, Though a Hybrid Cloud gives you the best of both the
Private Cloud and Hybrid Cloud. Public cloud computing, services, yet you have to decide between a Public or
what we hear the most is where Amazon EC2, Microsoft Private cloud for the base of your operations.
Azure, and Google Apps come to mind. But whether it is
Public Cloud Interfaces
the right model depends on the criticality of your
application and infrastructure requirements. It may work
Public cloud offers virtualized resources as a service,
for some of your computing needs, but if you feel more
enabling the deployment of an entire IT infrastructure
comfortable to have your computing resources inside your
without the associated capital costs, paying only for the
own firewalls, then private cloud computing is the right
used capacity. Amazon EC2, Microsoft Azure, ElasticHosts,
answer. That’s what enterprises tend towards when they
GoGrid, iWeb and Rackspace are examples of commercial
have a large user base and they are concerned about the
cloud providers of elastic capacity. They also offer a public
data, security and latency.
interface for remote management of virtualized server
instances within their proprietary infrastructure.
Private Cloud Interfaces
Private Cloud provides users with a flexible and agile
private infrastructure to run service workloads within their
administrative domains. Platform VM Orchestrator (VMO),
VMware vSphere, Citrix Cloud Center (C3), and Red Hat
Enterprise Virtualization Manager are commercial tools for
management of virtualized services on the datacenter for
building private clouds. OpenNebula Virtual Infrastructure
Engine (now part of Ubuntu) is an open-source alternative
for private cloud computing, which also supports hybrid
Figure 1: The Cloud cloud deployments to supplement local infrastructure with
computing capacity from an external cloud.
Let us now look into each of these clouds one by one:
Private cloud interfaces should allow the integration of the
Public Cloud - In a Public cloud, the vendor hosts the virtualized distributed infrastructure in the data-center
infrastructure in his remote own location and the customer
3|Page

4. Public and Priv ate Cl oud
TO DOWNLOAD THE FULL WHITEPAPER VISIT
http://bit.ly/nzd8xl
For More Information
For more information about WOLF products and services, call the WOLF Sales Information Center at +1 (703)-953-1053 (US)
or +91 80 4207 5425 (India). To access information using the World Wide Web, go to: http://www.wolfframeworks.com
© 2006-2011 WOLF Frameworks India Pvt. Ltd. All rights reserved.
4|Page