Introduction of Cloud Computing By : Prof. Pawan Thakur

HOD Computer Department ,

Vidyasagar Institute of Management (VIM), Bhopal

At the end of this presentation we will be able to understand:

Overview

Definition of Cloud Computing

Characteristics of Cloud Computing

Service Delivery Models (IAAS, PAAS and SAAS)

Cloud Deployment Models/ Types of Cloud

Pros and Cons of Cloud Computing

The term Cloud refers to a Network orInternet.

In other words we can say that Cloud issomething which is present at remotelocation.

Cloud can provide services over network,i.e., on public networks or on privatenetworks, i.e. WAN, LAN or VPN.

The applications such as e-mail, webconferencing, CRM all run in cloud.

Instead of keeping data on your own hard drive we use a service overthe Internet at another location to store your information or use itsapplications.

When we store our photos online instead of on our home computer, usewebmail, a social networking site you are using a “Cloud computing”service

Overview of Cloud

Many companies are delivering services from the cloud. Some notable examples as of July, 2014 include the following:

DEFINITIONS OF CLOUD COMPUTING

The Cloud computing is delivery of computing services over Internet.

It allows individuals and businesses to use software and hardware that aremanaged by third parties at remote locations.

Cloud Computing refers to manipulating,configuring, and accessing the applicationsonline. It offers online data storage,infrastructure and application.”

We need not to install a piece of software on ourlocal PC and this is how the cloud computingovercomes platform dependency

Cloud computing means on demand delivery of IT resources via the internet with pay-as-you-go pricing. It provides a solution of IT infrastructure in low cost.”

NIST Characteristics of Cloud Computing1. On-demand self-service. A consumer canuse computing capabilities such as server timeand network storage automatically withoutrequiring human interaction with each serviceprovider.

2. Broad network access. The capabilities areavailable over the network .

They can accessed through standardmechanisms by heterogeneous thin clientplatforms e.g., mobile phones, tablets, laptops,and workstations.3. Resource pooling. The provider's computing resources are pooled to serve multipleconsumers using a multi-tenant model. The different physical and virtual resources dynamically assigned and reassignedaccording to consumer demand.

4. Rapid elasticity. The capabilities can be elastically provisioned and released.

5. Measured service. Cloud systems automatically control and optimize resource. It leverage the metering capability at some level of abstraction appropriate to the typeof service e.g., storage, processing, bandwidth and active user accounts.

Service Delivery Models (SaaS, Paa S and IaaS,)

“The cloud service models are Software as a Service (SaaS), Platform as a Service' (PaaS) and Infrastructure as a Service (IaaS).”

1. Software as a Service (SaaS). Thecapability provided to the consumer isto use the provider’s applicationsrunning on a cloud infrastructure.

There are several SaaS applications some ofthem are listed below:

Billing and Invoicing System

Customer Relationship Management (CRM)applications

Help Desk Applications

Human Resource (HR) Solutions

2. Platform as a Service (PaaS). PaaS offers

the runtime environment for applications. It alsooffers development & deployment tools, required todevelop applications. Examples of PaaS offeringsinclude:

Google App Engine. The platform is used to develop and

run Java, Python and Go applications on Google’sinfrastructure.

Microsoft Windows Azure. It is on-demand compute andstorage services as well as a development and deploymentplatform for applications that run on Windows.

Salesforce Force.com. This platform is used to build and runapplications and components bought from App Exchange orcustom applications.

3. Infrastructure as a Service (IaaS). The capability

provided to the consumer is to provision processing,storage, networks, and other fundamental computingresources where the consumer is able to deploy and runarbitrary software, which can include operating systems andapplications. IaaS also offers: Virtual machine disk storage, Virtual local area network (VLANs)Load balancers. IP addresses, Software bundles

CLOUD DEPLOYMENT MODELS /TYPES OF CLOUD

Public cloud. The public cloud allows

systems and services to be easily accessibleto general public e.g., Google, Amazon,Microsoft offers cloud services viaInternet.

Private cloud. The private cloud allows

systems and services to be accessible withinan organization.

The Private Cloud is operated only within a single organization. However It may bemanaged internally or by third-party.

Hybrid Cloud. The hybrid cloud is a

mixture of public and private cloud .Non-critical activities are performedusing public cloud while the criticalactivities are performed using privatecloud.

Community Cloud. The community cloud allows system and services to be accessible

by group of organizations. It shares the infrastructure between several organizations from aspecific community. It may be managed internally or by the third-party .

Pros: Lower-cost computers for users

Improved performance

Lower it infrastructure costs

Fewer maintenance issues

Lower software costs

Instant software updates

Increased computing power

Unlimited storage capacity

Increased data safety

Improved compatibility between operating systems

Improved document format compatibility

Easier group collaboration

Universal access to documents

Latest version availability

Removes the tether to specific devices

Cons:•Requires a constant internet connection

•Does not work well with low-speed connections

•Can be slow

•Features might be limited

•Stored data might not be secure

• If the cloud loses your data you are screwed

Pros and Cons of Cloud Computing

Thankssssss…..