Cloud computing

CLOUD COMPUTING
Presented by
Muhammad Yaqoob

What is Cloud Computing?
• In Cloud Computing the word cloud is used a metaphor for “the internet”. We can say
that something is locating at remote location.
• In simple terms, Cloud Computing means storing and accessing data and programs
over the Internet instead of your computer's hard drive
• Cloud Computing is the Delivery of Computing Services-servers , storage services,
databases, networking software's , analytics and more over the internet. It is a class
of network based computing over the internet. They are also servicing model of
computing.
• Cloud Computing consists of hardware's and software's and they are managed by
third party access.

History of Cloud Computing:
• Cloud Computing was gradual evolution started in 1950’s with invention of Mainframe
Computers.
• After sometime, the concept of virtual machines (VMs) was created in 1970s.
• In 1999, the Saleservice.com started delivering of applications to the user using simple
website.
• In 2002, amazon provide First Public Cloud AWS (Amazon Web Service) provide service
like storage and computation.
• In 2009, Google apps also started providing cloud computing enterprise computing.
• In 2009, Microsoft launched Windows Azure and companies like Oracle and HP join the
network. This proves that cloud computing today becomes a mechanism today,

Examples of Cloud Computing:
• Zoom: Zoom is a cloud-based software platform for audio and video conferencing that
records meetings and saves them to the cloud so users can have access to them
anytime, anywhere.
• Dropbox: Dropbox is the clear leader in streamlined cloud storage allowing users
to access files on any device through its application or website with up to 1 terabyte of
free storage.
• Gmail: Google’s email service provider Gmail, on the other hand, provides unlimited
storage on the cloud. Gmail has revolutionized the way we send emails and largely
responsible for the increased usage of email worldwide.
• AWS (Amazon Web Services) is a comprehensive, evolving cloud computing platform
provided by Amazon that includes a mixture of infrastructure as a service (IaaS), platform
as a service (PaaS) and packaged software as a service (SaaS) offerings.

Deployment Models of Cloud Computing
• A cloud Deployment model represent a specific type of cloud Environment,
primarily distuiniushed by ownership size and access.
• There are three common cloud deployment models.
• Public Cloud
• Hybrid Cloud
• Private Cloud

Deployment Models of Cloud Computing:
• Public Model: Public cloud are owned and operated by third party cloud service
provider which deliver their computer resources like servers and storage over the
internet. As the name suggest, Public cloud model is open for Public. Anyone can
use it by paying only.
• Private Cloud: Private cloud is opposite to public cloud as it is not available for
public. It is built specifically for an organization to fit its needs. I may be manage
internally or by third party and be hosted internally and externally.
• Hybrid Cloud: Hybrid Cloud is combination if Private cloud as it uses services of
Public Cloud, allowing data and application to move between public and rivate
clouds. This model gives greater business flexibility because of dual service.

Services Model of Cloud Computing:
• Services Model are the reference models on which the Cloud Computing is based.
These can be categorized into three basic service models as listed below
• Infrastructure as a Service (IaaS)
• Platform as a Service (PaaS)
• Software as a Service (SaaS)

Services Model of Cloud Computing
• Infrastructure as a service (IaaS): is a cloud computing offering in which a vendor
provides users access to computing resources such as servers, storage, and
networking. Organizations use their own platforms and applications within a
service provider’s infrastructure.
• Key features:
• Instead of purchasing hardware outright, users pay for IaaS on demand.
• Infrastructure is scalable depending on processing and storage needs.
• Saves enterprises the costs of buying and maintaining their own hardware.
• Because data is on the cloud, there is no single point of failure.

• Platform as a service (PaaS): is a cloud computing offering that provides users a
cloud environment in which they can develop, manage, and deliver applications.
In addition to storage and other computing resources, users are able to use a
suite of prebuilt tools to develop, customize and test their own applications.
• Key features
• PaaS provides a platform with tools to test, develop, and host applications in the
same environment.
• Enables organizations to focus on development without having to worry about
underlying infrastructure.
• Providers manage security, operating systems, server software, and backups.

• Software as a service (SaaS): is a cloud computing offering that provides users with
access to a vendor’s cloud-based software. Users do not install applications on their
local devices. Instead, the applications reside on a remote cloud network accessed
through the web or an API. Through the application, users can store and analyze
data and collaborate on projects.
• Key features
• SaaS vendors provide users with software and applications on a subscription model.
• Users do not have to manage, install, or upgrade software; SaaS providers manage
this.
• Data is secure in the cloud; equipment failure does not result in loss of data.
• Use of resources can be scaled depending on service needs.

How Cloud Computing Works:
• Cloud computing takes the emphasis away from local computers. It is less about the machine
you use at home or on the move and more about what is happening on computers many
miles away.
• Instead of having to store information on your PC, smartphone or tablet, your data can be
kept remotely. It will then be made available to any device that is capable of reading it.
• Typically, most cloud computing is conducted via a web browser but there are other ways,
including specially-made apps for computers, tablets and smartphones. These act as access
points for cloud services. They also mean that you don’t always need to have dedicated
software installed on your machines.
• The benefit of this is clear: suddenly you are not tied to your own computer. You do not even
need to be tied to your own phone. All you need is a way of accessing the data and that be
done from any machine.
• this differs from traditional computing because you do not need portable storage media nor
are you relying on how robust or fast your machine is. With cloud computing, you are seeing
programs and data being managed and provided as a service over the internet and it opens
up many possibilities.

What is Cloud Storage?
• Data (or files) are said to be stored in the cloud when they are saved on a remote
server, which is easily accessible from anywhere with internet access. This allows
access to the data from any device connected to the internet, including
computers, tablets and smartphones.
• This is in contrast to local data storage, where data is stored on the hard drive of a
local desktop or a laptop.

Cloud Security:
• Cloud security, also known as cloud computing security, consists of a set of policies,
controls, procedures and technologies that work together to protect cloud-based
systems, data, and infrastructure. These security measures are configured to
protect cloud data, support regulatory compliance and protect customers' privacy
as well as setting authentication rules for individual users and devices. From
authenticating access to filtering traffic, cloud security can be configured to the
exact needs of the business. And because these rules can be configured and
managed in one place, administration overheads are reduced and IT teams
empowered to focus on other areas of the business.

Advantages of Cloud Computing
• Flexibility: There is a high rate of flexibility.
• Low Cost: Companies can save big by employing cloud computing as it can save cost for hardware
and software.
• Speed & Scales : Traditional methods to buy and configure hardware and software are time
consuming.
• Easier Management of Data and Information: Since all data are located on a centralized location,
data are more organized making it easy to manage.
• Device Diversity: We can access our applications and data anywhere in the world, on any system.
• Increased Storage Capacity: Increased Storage capacity is another benefit of the cloud computing,
as it can store more data as compared to a personal computer.
• Easy to Learn and Understand: Since people are quiet used to cloud applications like Gmail,
Google Docs, so anything related to the same is most likely to be understood by the user.
• Automatic updating : It saves companies time and
• Effort to update multiples server.
• Customize Setting: Cloud computing also allows you to customize your business applications.

Disadvantages of Cloud Computing
• Dependency: One major disadvantages of cloud computing is user’s dependency
on the provider.
• Risk: Cloud computing services means taking services from remote servers.
• Requires a Constant Internet Connections: The most obvious disadvantage is that
Cloud computing completely relies on network connections.
• Security: Security and privacy are the biggest concerns about cloud computing.
• Migration Issue: Migration problem is also a big concern about cloud computing.

Characteristics of Cloud Computing
• On-demand self-service: Users are able to provision cloud computing resources
without requiring human interaction, mostly done though a web-based self-
service portal.
• Broad Network Access: Cloud computing resources are accessible over the
network, supporting heterogeneous client platforms such as mobile devices and
workstations.
• Resource Pooling: Service multiple customers from the same physical resources,
by securely separating the resources on logical level .
• Measured Services: Resource usage are monitored, measured and reported
transparently based on utilization, in short pay for use.

Software used in Cloud Computing:
• Amazon Web Service (AWS)
• Microsoft Azure.
• Google Cloud Platform.
• IBM Cloud Services.
• Adobe Creative Cloud.

Cloud Computing Effects on IT Jobs in Future
• IT Jobs with Reduced Demand
• System Administrators and Database Administrators: Since cloud
computing remotely centralizes networks, the need for in-house system
and database administrators will decrease. However, IT professionals with
this experience will likely be sought after by cloud providers as more
business rely on cloud computing for administration.
• Help Desk Support: As with select administrative positions, the role of help
desk personnel will not be completely eliminated. It is likely that both help
desk and system support staff positions will taper off internally as
companies relocate to the cloud, but will develop within remote cloud
service providers

Cloud computing

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