Cloud Computing

Prepared by : Dalel Mahdhi Darine Znegui Nidhal Khlifi Moslem Zgueb

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Plan

• What is Cloud Computing?• Characteristics of Cloud Computing• Services of Cloud Computing

Software as a Service (Saas)Platforms as a Service (Paas)Infrastructure as a Service (Iaas)

• Models of Cloud ComputingPublic CloudPrivate CloudHybrid Cloud

• Evolution’s Impact on Engineers Future • Conclusion 2AU:2015/2016

What is the Cloud Computing?

• General term used to describe a new class of network based computing that takes place over the Internet.

• A collection of integrated and networked hardware, software and Internet infrastructure (called a platform).

• Using the Internet for communication and transport provides all the services proposed.

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• Hide the complexity and details of the deployment of the infrastructure.

• providing very simple graphical interface or API for simple use or management

• The platform provides on demand services, that are always on, anywhere, anytime and any place.

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What is the Cloud Computing?

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Advantages

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Unlimited Storage Capacity Availability of software applications Universal Access to Documents Lighting-quick processing power Lower IT Infrastructure Costs Fewer Maintenance Issues Lower Software Costs Increased Data Safety Easier Group Collaboration Latest Version Availability

Inconvinient

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Requires a constant Internet Connection

Security of private data and data storage

Legal contraints

Features Might Be limited

Stored Data Might Not Be Secure

• On Demand Self Service,• Ubiquitous Network Access: Any where, any time, any

device.• Location independent Ressource Pooling • Rapid Elasticity• Pay as you go.

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Characteristics of Cloud Computing

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Services Of Cloud Computing

• A way of delivering applications over the Internet—as a service. Instead of installing and maintaining software.

• Access it via the Internet, customers have no hardware or software to buy, install, maintain, or update.

• The provider manages access to the application, including security, availability, and performance.

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Software as a Service (Saas)

Examples

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Platforms as a Service (PaaS)• PaaS is a category of cloud computing that allows users to

create software applications using tools supplied by the provider.

With PaaS, developers can:build applications and services over the internet deploy those applications without any specialized systems

administration skills.write the code wich can be uploaded by the PaaS provider

and they present it on the internet.

Use of a Platform like a service .11AU:2015/2016

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Platforms as a Service (PaaS)

Pros & Cons:

+ Rapid development at low cost,

+ Private and public deployment,

-Limits developers to provider languages and tools.

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Example:

 

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ActiveState

Amazon Web Services

CloudBees

Force.com

Google App Engine

Microsoft Windows Azure

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Infrastructure as a Service (IaaS)•  IaaS is one of the three fundamental service models of

cloud computing alongside Platform as a Service (PaaS) and Software as a Service (SaaS).

• IaaS is a form of cloud computing that provides virtualized computing resources over the Internet.

• IaaS involves outsourcing the basic infrastructure used to support operations--including storage, hardware, servers, and networking components.

• IaaS providers supply these resources on-demand from their large pools installed in data-center. 

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Example:

 

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Connecting UP

Amazon Web Services

Microsoft Azure

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Public Cloud:• The public cloud is a prime

example of the cloud computing model:

easy to set up, highly scalable and elastic, where users will only pay for the

resources that they use.

It is a set of resources which’s assigned to one company or organization.

Models of Cloud Computing

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Models of Cloud Computing

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Private Cloud:

Private cloud is a type of cloud computing that delivers similar advantages to public cloud, including scalability and self-service, but through a proprietary architecture.Unlike public clouds, a private cloud is dedicated to a single organization provided with greater control and privacy.

 The features and benefits of private clouds therefore are:• Higher security and privacy• More control

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Models of Cloud Computing

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Private Cloud:

Virtual private cloud (VPC)• is the logical division of a service provider's public

cloud multi-tenant architecture to support private cloud computing in a public cloud environment.

 • It is a cost-effective solution that is ideal for expanding your

presence into the public cloud instead of expanding your onsite infrastructure.

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Models of Cloud Computing

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Private Cloud:

Host Private Cloud• Cloud hosting services provide hosting for websites on

virtual servers which pull their computing resource from extensive underlying networks of physical web servers. 

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Hybrid Cloud:

Models of Cloud Computing

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Hybrid Cloud:

Models of Cloud Computing

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Conclusion

• Cloud Computing is outpacing the IT industry• Real business value can be realized by customers of all sizes• Cloud solutions are simple to acquire, don’t require long term

contracts and are easier to scale up and down as needed• Proper planning and migration services are needed to ensure a

successful implementation• Public and Private Clouds can be deployed together to leverage the

best of both• Third party monitoring services ensure customer are getting the

most out of their cloud environment• Security Compliance and Monitoring is achievable with careful

planning and analysis.

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Evolution’s Impact on Engineers Future

• Many of the activities loosely grouped together undercloud computing have already been happening and centralised computing activity is not a new phenomena

• Grid Computing was the last research-led centralised approach

• However there are concerns that the mainstream adoption of cloud computing could cause many problems for users

• Many new open source systems appearing that you can install and run on your local cluster– should be able to run a variety of applications on these systems

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• https://en.wikipedia.org/wiki/Cloud_computing• http://www.gartner.com/it-glossary/infrastructure-as-a-service-ia

as/• http://www.interoute.com/what-paas• http://searchcloudcomputing.techtarget.com/definition/public-clo

ud• http://www.appcore.com/types-cloud-computing-private-public-h

ybrid-clouds/

References

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Thank you !

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