Cloud hosting is now well explained &
demonstrated by most of the IT experts
as an emerging technology wherein
data, applications, disc space, memory
etc are streamed to users as services
delivered over the internet. Though
there is dilemma about cloud hosting in
most of IT organizations, in terms of
what, when and how? People are still
confused about when to migrate to
cloud? How to migrate & additionally
what type of cloud to choose?
Typically there are 3 types of cloud
hosting – private cloud which
encompass internal services, external
public services and a combination of
both called as hybrid.
• Private clouds:
Private cloud is also known as internal
cloud, which allows sharing IT
resources & applications over the
company intranet which can be
accessed by users within that
organization only. This becomes
private cluster for different users
sharing different data & applications,
which is generally setup behind a
firewall. In private cloud environment
no resources are shared with outside
agencies or organizations & so multi
tenancy does not occur. Private cloud is
very specific to the needs of the owing
organization & it uses private
connection to give almost 100% uptime
& dedicated disc space which in turn
offers great amount of security.
• Public clouds:
Public cloud is commonly known as
external cloud, which offers IT services
as a service over the Internet with little
or no control over the technology
infrastructure it is based on. It reduces
complexity & long lead times in testing
or deploying new projects as most of
the common resources can be shared
with other companies with similar
objectives. This is alluring to many IT
directors as it is cheaper, & offers
maximum benefits of sharing IT
resources as a service.
• Hybrid clouds:
As name indicates hybrid cloud is
combination of both private & public
cloud; of course offering benefits of
both services. This is an integrated
approach, which give some good points
from private cloud & some from public
cloud. It is highly customizable as per
the need of purchasing organizations.
Rules and policies are also customized
for security & underlying
infrastructure. In hybrid cloud
environment, activities & tasks are
allocated as per the needs to internal as
well as external users.
According to deployment options,
cloud may be called as internal
(Private), external (Public) or hybrid;
but it could be still segregated as per
the service type or platform on which it
is based - Software-as-a-Service (SaaS),
Platform-as-a-Service (PaaS) &
Infrastructure-as-a-Service (IaaS).
SaaS cloud allows access to a remote
product or e-commerce service over
the Internet such as remote CRM
(Salesforce) or a data center available
on internet (eBooks). Platform-as-a-
Service (PaaS) is intended towards
developers who don't want to get
involved in underlying infrastructure &
just share applications in cloud (Open
source PHP). Infrastructure-as-a-
Service (IaaS) allows maximum
involvement of the underlying server
infrastructure to the users - developers
which includes deployment back-office
applications on that remote
environment.
There are further more classifications
available for cloud such as community
clouds, cloud streams, mobile clouds
and federated clouds. All of them
however are deployed similarly based
on virtualization & concept of
centralizing applications &
infrastructure on isolated servers and
remotely managed and developed
different nodes in cloud.
You may choose any type amongst
above mentioned clouds, but don't
forget to get most of it by selecting
right vendor & to suite best to your
business needs.
demonstrated by most of the IT experts
as an emerging technology wherein
data, applications, disc space, memory
etc are streamed to users as services
delivered over the internet. Though
there is dilemma about cloud hosting in
most of IT organizations, in terms of
what, when and how? People are still
confused about when to migrate to
cloud? How to migrate & additionally
what type of cloud to choose?
Typically there are 3 types of cloud
hosting – private cloud which
encompass internal services, external
public services and a combination of
both called as hybrid.
• Private clouds:
Private cloud is also known as internal
cloud, which allows sharing IT
resources & applications over the
company intranet which can be
accessed by users within that
organization only. This becomes
private cluster for different users
sharing different data & applications,
which is generally setup behind a
firewall. In private cloud environment
no resources are shared with outside
agencies or organizations & so multi
tenancy does not occur. Private cloud is
very specific to the needs of the owing
organization & it uses private
connection to give almost 100% uptime
& dedicated disc space which in turn
offers great amount of security.
• Public clouds:
Public cloud is commonly known as
external cloud, which offers IT services
as a service over the Internet with little
or no control over the technology
infrastructure it is based on. It reduces
complexity & long lead times in testing
or deploying new projects as most of
the common resources can be shared
with other companies with similar
objectives. This is alluring to many IT
directors as it is cheaper, & offers
maximum benefits of sharing IT
resources as a service.
• Hybrid clouds:
As name indicates hybrid cloud is
combination of both private & public
cloud; of course offering benefits of
both services. This is an integrated
approach, which give some good points
from private cloud & some from public
cloud. It is highly customizable as per
the need of purchasing organizations.
Rules and policies are also customized
for security & underlying
infrastructure. In hybrid cloud
environment, activities & tasks are
allocated as per the needs to internal as
well as external users.
According to deployment options,
cloud may be called as internal
(Private), external (Public) or hybrid;
but it could be still segregated as per
the service type or platform on which it
is based - Software-as-a-Service (SaaS),
Platform-as-a-Service (PaaS) &
Infrastructure-as-a-Service (IaaS).
SaaS cloud allows access to a remote
product or e-commerce service over
the Internet such as remote CRM
(Salesforce) or a data center available
on internet (eBooks). Platform-as-a-
Service (PaaS) is intended towards
developers who don't want to get
involved in underlying infrastructure &
just share applications in cloud (Open
source PHP). Infrastructure-as-a-
Service (IaaS) allows maximum
involvement of the underlying server
infrastructure to the users - developers
which includes deployment back-office
applications on that remote
environment.
There are further more classifications
available for cloud such as community
clouds, cloud streams, mobile clouds
and federated clouds. All of them
however are deployed similarly based
on virtualization & concept of
centralizing applications &
infrastructure on isolated servers and
remotely managed and developed
different nodes in cloud.
You may choose any type amongst
above mentioned clouds, but don't
forget to get most of it by selecting
right vendor & to suite best to your
business needs.
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