Cloud Computing

Project owner: Hayestech Pty. Ltd.

Project Director: Shaniur TIM Nabi

Project Manager: Mehedi Hasan Khan

Team members: Asif Imran Tauhid Bin Iqbal

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Cloud Computing

Table of Contents

What is Cloud Computing Cloud Services Cloud Architecture Comparative Study Expenditure Features Traditional in-house business Cloud Penetration

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Cloud Computing

What is Cloud Computing

Cloud Computing is a buzzword…………

The concept, quite simply, is that vast computing resources will reside in a remote location (rather than in your computer room) and we’ll connect to them and use them as needed.

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Software as a Service [SaaS]: Instead of obtaining desktop and server

licenses for software products it uses, an enterprise can obtain the same functions through a hosted service from a provider through a network connection. This common cloud-computing model is known as Software as a Service (SaaS), the provider is known as the SaaS Provider. These applications could be in ERP, VCC to name a few.

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Advantages of SaaS

Saves the complexity of software installation.

No need for maintenance, upgrades, and patches (for example, for security fixes) for the IT team within the enterprise.

SaaS provider can provide this service to multiple customers and enterprises, resulting in a multitenant model.

Monitoring application-delivery performance is the responsibility of the SaaS provider.

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Platform as a Service [PaaS] Platform as a Service (PaaS) provides a

software platform on which users can build their own applications and host them on the PaaS provider’s infrastructure. The software platform is used as a development framework to build, debug, and deploy applications. It often provides middleware-style services such as database and component services for use by applications.

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Advantages of PaaS

PaaS is a true cloud model in that applications do not need to worry about the scalability of the underlying platform (hardware and software).

When enterprises write their application to run over the PaaS provider’s software platform, the elasticity and scalability is guaranteed transparently by the PaaS platform.

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Infrastructure as a Service [IaaS]

Amazon is arguably the first major proponent of Infrastructure as a Service (IaaS) through its Elastic Computing Cloud (EC2) service. An IaaS provider offers you “raw” computing, storage, and network infrastructure so that you can load your own software, including operating systems and applications, on to this infrastructure.

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Advantages of IaaS

Offers you the greatest degree of control of the three models.

Scaling and elasticity are your—not the provider’s—responsibility.

It is a mini do-it-yourself data center that you have to configure to get the job done.

Amazon uses virtualization as a critical underpinning of its EC2 service, so you actually get a VM when you ask for a specific machine configuration

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Cloud Architectures

1. Public Cloud

2. Community Cloud

3. Private Cloud

4. Hybrid Cloud

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Cloud Architectures: Public Cloud We have focused on cloud service

providers whose data centers are external to the users of the service (businesses or individuals). These clouds are known as public clouds—both the infrastructure and control of these clouds is with the service provider.

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Cloud Architectures: Private Cloud A variation on this scenario is the private

cloud. Here, the cloud provider is responsible only for the infrastructure and not for the control. This setup is equivalent to a section of a shared data center being partitioned for use by a specific customer. The private cloud can offer SaaS, PaaS, or IaaS services, though IaaS might appear to be a more natural fit.

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Cloud Architectures: Hybrid Cloud A hybrid cloud involves data centers

storing secure and important data on the enterprise premises and less important data to be stores at a remote location in the cloud. So t is a mixture of public and private cloud that yields the most benefit.

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Comparative Study

Traditional In-house system implementation

Cloud services in the form of SaaS, Paas and IaaS

1. High CapEx 1. OpEx oriented

2. Time required to implement the system

2. Comparatively low startup cost

3. Maintenance Cost 3. Pay for what you use

4. Equipment depreciation 4. Low maintenance cost

5. Dedicated staff for 24 * 7 support 5. Scalable and secure environment

6. Under-utilized resources 6. Business companies can focus on business development, not on IT.

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Expenditure

By 2011 16 billion or 4% of total IT s:pending will be on cloud.

By 2012, it is likely to go upto 9%.

Reasons: Cost controls, Better Peak time Economy,Readily Scalable, Concentrate on the business and less on IT infrastructure.

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Features

Agility Reliability Scalability Performance Security Maintenance

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Feature 1: Scalability

Cloud computing gives you the ability to expand and reduce resources according to your specific service requirement.

For example, you may need a large number of server resources for the duration of a specific task. You can then release these server resources after you complete your task.

twitter for instance

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Feature2: Pay-per-use

You pay for cloud services only when you use them.

The short term (for example, for CPU time)

or for a longer duration (for example, for

cloud-based storage or vault services).

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Feature 3: On-demand service Because you invoke cloud services only

when you need them, they are not permanent parts of your IT infrastructure—a significant advantage for cloud use as opposed to internal IT services. With cloud services there is no need to have dedicated resources waiting to be used, as is the case with internal services.

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Feature 3: Resiliency

The resiliency of a cloud service offering can completely isolate the failure of server and storage resources from cloud users. Work is migrated to a different physical resource in the cloud with or without user awareness and intervention.

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Traditional in-house business

software

Employees Your business Servers

CRMPOSERPHRMEmailVCC

Hardware dependencyOperating systemsDatabasesSecurity patchesUnpredictable costs

Softwares

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Cloud Computing Penetration

software

Employees Your business Servers

CRMPOSERPHRMEmailVCC

Hardware dependencyOperating systemsDatabasesSecurity patchesUnpredictable costs

Softwares

Cloud Computing

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Traditional in-house business

Employers Your business

CRMPOSERPHRMEmailVCC

Softwares

Cloud Computing

ERP

Hosted PBX

Email

More

More

10 employees = 10 subscriptions

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Cloud Computing

Traditional in-house business

Employers Your business

CRMPOSERPHRMEmailVCC

Softwares

Cloud Computing

datacenters

10 employees = 10 subscriptions

Hardware dependencyOperating systemsDatabasesSecurity patchesUnpredictable costs

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Traditional in-house business

Cloud Computing

datacenters

Hardware dependencyOperating systemsDatabasesSecurity patchesUnpredictable costs

Economies of Scale

30% to 50% less in expenditure

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Areas of cloud computing

Banking Hospitals Educational institutions

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