Cloud computing

CLOUD COMPUTINGJanuary 6, 2020
"You don't generate your own electricity.
Why generate your own computing?“ -Jeff Bezos, Amazon.

What is cloud computing ? History Components Cloud Service Provider Cloud Computing services Why so Popular? Cloud Architecture
What is cloud computing ?
“Cloud computing is a style of computing where massively
scalable IT-related capabilities are provided as a service
across the Internet to multiple external customers”
“Cloud computing is Internet based computing where virtual shared
servers provide software, infrastructure, platform, devices and other
resources and hosting to customers on a pay-as-you-use basis.”
“Cloud computing is Web-based processing, whereby shared
resources, software, and information are provided to computers and
other devices (such as smart phones) on demand over the Internet.”
1

“Cloud computing is Web-based processing, whereby shared
resources, software, and information are provided to computers and
other devices (such as smart phones) on demand over the Internet.”
2

“Cloud computing is Web-based processing, whereby shared resources,
software, and information are provided to computers and other devices
(such as smart phones) on demand over the Internet.”
3

• “Distributed computing on internet Or delivery of
computing service over the internet.”
E.g.: Live, Gmail, VMs ,Amazon=-
Instead of running an e-mail program on your computer,
you log in to a Web e-mail account remotely. The software and storage for
your account doesn't exist on your computer -- it's on the service's
computer cloud.
4

History Components Cloud Service Provider Cloud Computing services Why so Popular? Cloud Architecture
• In addition, the platform provides on demand services, that are
always on, anywhere, anytime and any place.
• Pay for use and as needed, elastic
– scale up and down in capacity and functionalities
• The hardware and software services are available to
– general public, enterprises, corporations and businesses markets
What is cloud computing ? 5

HistoryWhat is cloud computing ? Components Cloud Service Provider Cloud Computing services Why so Popular? Cloud Architecture
History
One of the first movers in cloud computing was Salesforce.com,
which in 1999 introduced the concept of delivering enterprise
applications via a simple website.
In 2002 Amazon started Amazon Web Services, providing
services like storage, computation.
The year 2006 also saw the introduction of Amazon’s Elastic Compute cloud (EC2) as a commercial
web service that allowed small companies and individuals to rent computers on which to run their
own computer applications.
6

History
Then came Google Docs in 2006,
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History
But 2009 marked a key turning point in the evolution of cloud computing, with
the arrival of browser based cloud enterprise applications, with the best known
being Google Apps Working on Google Chrome.
8

History
In 2009 , Microsoft’s enter into
cloud computing with the launch
of Windows Azure (cloud platform)
in November.
9

History
Office 365 was initially
announced in the autumn of
2010, and was made available
to the public on June 28, 2011
by Microsoft.
10

Components
HistoryWhat is cloud computing ? Components Cloud Service Provider Cloud Computing services Why so Popular? Cloud Architecture 11
It has three components-
1.) Client computers
2.) Distributed Servers
3.) Datacenters

Components
Client -
Clients are the device that the end
user interact with cloud.
Ex- Mobile, Laptop, etc.

Components
Datacenter -
It is collection of servers where
application is placed and is
accessed via internet.

Components
Distributive server -
Often servers are in geographically
different places, but server acts as if
they are working next to each
other.

HistoryWhat is cloud computing ? Components Cloud Service Providers Cloud Computing services Why so Popular? Cloud Architecture
Cloud computing Service providers
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• Amazon
• VMware cloud
• Google App Engine
• Savvis
• Microsoft windows Azure
Cloud Service Provider

HistoryWhat is cloud computing ? Components Why so Popular? Cloud ArchitectureCloud Service Provider Services on Cloud ComputingCloud Computing services
 What cloud computing can provide ?
Cloud Computing services
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HistoryWhat is cloud computing ? Components Why so Popular? Cloud ArchitectureCloud Service Provider Cloud Computing services
Software as a Service (SaaS)
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.
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Key Features
o SaaS vendors provide users with software and applications on a subscription model.
o Users do not have to manage, install, or upgrade software; SaaS providers manage this.
o Data is secure in the cloud; equipment failure does not result in loss of data.
o Use of resources can be scaled depending on service needs.

Software as a Service
 Software hosted in the cloud
 Web browser access
 Google Docs, SalesForce, iCloud, Dropbox
 Customers can utilize greater computing power while saving-
 Cost
 Space
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Platform as a Service (PaaS)
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
o PaaS provides a platform with tools to test, develop, and host applications
o in the same environment.
o Enables organizations to focus on development without having to worry
o about underlying infrastructure.
o Providers manage security, operating systems, server software, and
o backups.
o Facilitates collaborative work even if teams work remotely.

Platform as a Service
 Host provides software development platform
 Customer creates software
 Google App Engine, Microsoft Azure, IBM Bluemix
 Host provides hardware
 Networks
 Servers
 storage
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21
Infrastructure as a Service (IaaS)
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
o Instead of purchasing hardware outright, users pay for IaaS on demand.
o Infrastructure is scalable depending on processing and storage needs.
o Saves enterprises the costs of buying and maintaining their own hardware.
o Because data is on the cloud, there is no single point of failure.

Infrastructure as a Service
 computer infrastructure as a service
 Host provides:
 Servers
 Clients
 Networks
 Infrastructure providers can dynamically
allocate resources
 Vmware Vcloud Air, Amazon Web Services
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23

24
• Public Clouds
• Private Clouds
• Hybrid Clouds

History Components Cloud Computing services Why so Popular? Cloud Architecture
Why cloud service is popular ?
What is cloud computing ? 25Cloud Service Provider
 Reduce the complexity of networks.
 Do not have to buy software licenses.
 reliability, and efficiency.
 Info. at cloud are not easily lost.

History Components Cloud Computing services Why so Popular? Cloud Architecture
Cloud Architecture
What is cloud computing ? 26Cloud Service Provider

DisadvantagesAdvantages Mobile Cloud ComputingCloud Computing, Tomorrow Conclusion
Advantages…
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1. Reduced software costs.
2. Instant software updates.
3. Universal document access.
4. Latest version availability.
5.Device independence.
6. Improved performance.

Disadvantages…
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1. Requires a constant Internet connection.
2. Does not work well with low-speed connections.
3. Features might be limited.
4. Can be slow.
5. Stored data might not be secure.
6. Stored data can be lost.

DisadvantagesAdvantages Mobile Cloud ComputingCloud Computing, Tomorrow Conclusion 29
If cloud computing is so great, why isn’t everyone doing it?
o The cloud acts as a big black box, nothing inside the cloud is visible to the clients.
o Clients have no idea or control over what happens inside a cloud.
o Even if the cloud provider is honest, it can have malicious system admins who
can tamper with the VMs and violate confidentiality and integrity.
o Clouds are still subject to traditional data confidentiality, integrity, availability,
and privacy issues, plus some additional attacks.

Cloud Computing , Tomorrow…
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Mobile Cloud Computing…
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 Provide a better interface to view
shared files.
 Synchronizing our app with PC to
allow easy sharing of data.
 Provide better authentication and
allow group access to shared
accounts.
 Extending our app so that it can be
used on multiplatform such as iOS,
Blackberry OS, etc.

Conclusion…
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Bottom Line for Cloud Computing…
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“Cloudcomputing is a simpleidea ,but it can
have huge impact on our Life.”

Cloud computing

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