UNIT TWO PART TWO THE EMERGING TECHNOLOGY

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2.2. CLOUD COMPUTING
SET BY:-GAREDEW B. (MSC CANDIDATE)

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2.2.1 INTRODUCTION TO CLOUD COMPUTING
Cloud computing is defined as storing and accessing
data and computing services over the Internet.
It does not store any data on your personal computer.
Computing services like servers, data storage,
networking, databases, etc. are all available on-
demand.

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CONT…
•The main advantage of cloud computing is
It gives access to many users from
single data center which allows users to
store and
To access their data over the internet
without any limitations.

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CONT…
We have all experienced cloud computing at some
point.
The goal of cloud computing is
To provide easy and flexible access to computing
resources and IT services, various which hardware
and software components are required for the proper
use of a cloud computing model.

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COLLABORATION THROUGH DIGITAL
TECHNOLOGIES

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CONT…
Peoples are using different types of cloud-
based services for their email
communications, document management,
entertainment and ecommerce services.

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CONT…
Examples of cloud-based services includes but
not limited to: Gmail, Google Maps,Amazon,
Netflix, PayPal, Spotify, Adobe Creative Cloud,
Kindle, etc.

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2.2.2 BENEFITS OF CLOUD COMPUTING
Accessibility and mobility- Users may access their
tools from anywhere, at any time, and from any type
of devices as long as they are connected to the
Internet.
•Users do not lose any data if their services fail
because the Cloud service provider backs up their
data.

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CONT…
Cloud based services support to include inclusive
technologies like:-
voice recognition,
mind mapping,
word prediction,
text to speech for editing etc. to accommodate
special needs learners.

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CONT…
Flexibility- Services become entirely
adaptable and can be changed at any time
to meet users’ needs and commercial
requirements.
User can restrict or enhance the available
resources while paying only for what is used.

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CONT…
Another benefit is that resources can be
shared, allowing users to collaborate in real-
time on the same content in all domain and
work environments.

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CONT…
Updating and scalability – The service
provider, as well as taking care of
maintenance, takes care of all service
updates, which allow users to focus more
effectively on our work and responsibilities
while increasing our efficiency .

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CONT…
Optimized security- When compared to
traditional and internal infrastructures, Cloud
Computing provides enhanced security.
Companies are finding it increasingly difficult
to effectively secure their own IT systems due
to a lack of time, expertise, and budget.

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CONT…
Controlled costs - The other advantage is that
Cloud Computing allows for greater control of
costs IT infrastructure.
•We can adjust the resources allocated to its
infrastructure depending on its needs by
increasing or decreasing the resources available.

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CONT…
•Example from text

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2.2.3 LIMITATIONS OF CLOUD COMPUTING
Server downtime – No cloud provider can guarantee
that you will not have service interruptions, which
will prevent you from accessing your data or files.
•Because cloud computing is dependent on an Internet
connection, if it goes down, so will your cloud
services.

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CONT…
Security and privacy issues – When it comes to
handling sensitive data, companies are always
concerned about how safe and private it is.
•There is still a risk of intruders, even though a cloud
provider would have security processes in place to
ensure that your data is maintained and protected
properly.

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CONT…
Intruders are constantly attempting to find
new ways to break into cloud providers’
systems in today’s digital world.
Therefore, cloud computing services are not
completely safe.

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CONT…
Data ownership and transparency – Companies may
think that there is a lack of transparency concerning
data ownership.
Does data that is uploaded to a cloud computing system
become the cloud provider’s property?
Another concern is lack of data openness.
Companies may be concerned about how their data is
managed and whether it is being compromised or not.

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CONT…
Inflexibility – Some cloud computing providers
may take a corporation off guard by requiring
the usage of their applications and formats.
For example, they can limit that a corporation
can only upload data developed in a specific
application program.

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CONT…
Lack of support – Cloud-based services, in
comparison to other hosting services and providers,
provide minimal to no customer assistance.
Customers who are unable to contact cloud
providers by phone or email frequently turn to
Internet forums for answers to their questions.

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CONT…

Cost – Another disadvantage of this service is the unknown
fees.
Although cloud hosting eliminates the need for on-site
infrastructure, it is often necessary to ensure that you are
paying for all of the features that your organization needs
to get the most out of the service.
A cloud computing service can become costly in this regard.

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2.2.4 TYPES OF CLOUD COMPUTING
There are mainly four types of cloud computing
available currently, namely:
1. public cloud
2. private cloud
3. hybrid cloud
4. community cloud

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CONT…
1.public cloud:-It is a standard cloud
computing model where a service provider’s
resources are shared across different clients.

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CONT…
2. Private cloud – As the name indicates, the private
cloud has all resources dedicated to your application.
It can be either from a cloud service provider or your
company’s data center.
It gives complete control over data security and privacy.
The private cloud provides an additional layer of
protection to process sensitive and confidential
information

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CONT…
3. Hybrid cloud – It is the combination of public cloud and
private cloud.
You can host your public service in the public
cloud, and confidential and data-related services in the
private cloud.
It offers a very flexible and comprehensive benefit
of both models.

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CONT…
4. Community cloud – It is a collaborative, multi-
tenant platform used by several distinct
organizations to share the same applications.
The users are typically operating within the same
industry or field and share common concerns in
terms of security, compliance, and performance

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CONT…
The platform itself is managed privately, either
in a data center or on-premises.
Governmental institutions, healthcare facilities,
financial services companies, and other
professional communities frequently use this
solutions.

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2.2.5 CLOUD COMPUTING SERVICES
The three major cloud computing services are:
1.Software as a Service (SaaS)
2.Platform as a Service (PaaS)
3.Infrastructure as a Service (IaaS)

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CONT…
1. Software as a Service (SaaS) - SaaS is a
software distribution model in which
applications are hosted by a vendor or service
provider and made available to customers
over a network or the Internet.

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CONT…
SaaS is compatible with all Internet-enabled
devices.
Many important tasks like accounting, sales,
invoicing, and planning can be performed
using SaaS

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CONT…
Examples of SaaS are: Google Workspace,
Dropbox, Microsoft Office 365, Slack, Cisco
WebEx, Concur, GoToMeeting etc…

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CONT…
2. Platform as a Service (PaaS) - provides a
platform and environment to allow developers
to build applications and services.
This service is hosted in the cloud and
accessed by the users via the Internet.

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CONT…
PaaS provides a platform to support
application development. Eg. From text
It includes software support and
management services, storage, networking,
deploying, testing, collaborating, hosting, and
maintaining applications.

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CONT…
Examples of PaaS are: Windows Azure,
Heroku, Force.com, Google App Engine,
Apache Stratos, OpenShift, and many more.

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CONT…
3. Infrastructure as a Service (IaaS)- IaaS is one
of the fundamental service models of cloud
computing, alongside PaaS.
It provides access to computing resources in
a virtualized environment- “the cloud”- on the
Internet.

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CONT…
IaaS is a complete package for computing.
For small-scale businesses that are looking
for cutting costs on IT infrastructure, IaaS is
one of the solutions.

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CONT…
Examples of IaaS are - Amazon Web Services
(AWS), Cisco Metapod, Microsoft Azure,
Google Compute Engine (GCE), and many
more

UNIT TWO PART TWO THE EMERGING TECHNOLOGY

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UNIT TWO PART TWO THE EMERGING TECHNOLOGY