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notes for module 4 iot
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Module 4Associated IoT Technologies
Cloud Computing:
Cloud computing is more than traditional network computing.
Unlike network computing, cloud computing comprises a pool of multiple resources
such as servers, storage, and network from single/multiple organizations.
These resources are allocated to the end users as per requirement, on a payment basis.
In cloud computing architecture, an end user can request for customized resources such
as storage space, RAM, operating systems, and other software to a cloud service
provider (CSP) as shown
For example, a user can request for a Linux operating system for running an application
from a CSP; another end user can request for Windows 10 operating system from the
same CSP for executing some application.
, The cloud services are accessible from anywhere and at any time by an authorized
user through Internet connectivity.
Cloud computing comprises a shared pool of computing resources, which are accessible
dynamically, on-demand basis by the users.
This shared pool of resources includes networks, storage, processor, and servers.
The services of cloud computing are based on the pay-per-use model.
In cloud computing, a user pays for the cloud services as per the duration of their
resource usage.
On the other hand, there is a CSP, that provides cloud services to end user organizations.
Virtualization
The key concept of cloud computing is virtualization.
The technique of sharing a single resource among multiple end user organizations or
end users is known as virtualization.
In the virtualization process, a physical resource is logically distributed among multiple
users.
a user perceives that the resource is unlimited and is dedicatedly provided to him/her.
, Advantages of virtualization
With the increasing number of interconnected heterogeneous devices in IoT, the
importance of virtualization also increases.
Typically, there are different software such as VMware, which enable the concept of
virtualization.
With the increasing importance of cloud computing, different organizations and
individuals are using it extensively.
there is always a risk of system crash at any instant of time. In such a scenario, cloud
computing plays a vital role by keeping backups through virtualization.
Primarily, there are two entities in a cloud computing architecture:
1.End users
2.CSP.
Both end users and CSP are benefited in several aspects through the process of
virtualization.
Advantages for End Users
1.Variety: The process of virtualization in cloud computing enables an end user
organization to use various types of applications based on the requirements.
3.Portability: Portability signifies the availability of cloud computing services from
anywhere in the world, at any instant of time. [For example, a person flying from the US
to the UK still has access to their documents, although they cannot physically access the
devices on which the data is stored. This has been made possible by platforms such as
Google Drive.]
4. Elasticity: Through the concept of virtualization, an end user can scale-up or scale-
down resource utilization as per requirements
Advantages for CSP
1.Resource Utilization: CSP in a cloud computing architecture procures resources on
their own or get them from third parties.
These resources are distributed among different users dynamically as per their
requirements.
A segment of a particular resource provided to a user at a time instant, can be provided
to another user at a different time instant.
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