Cloud computing is a model for enabling network access to configurable computing resources that can be rapidly provisioned with minimal management effort. It involves delivering computing resources like servers, storage, databases, networking, software, analytics and more over the internet. Key characteristics include on-demand self-service, ubiquitous network access, resource pooling, rapid elasticity and pay-per-use. Common types of cloud services are Infrastructure as a Service (IaaS), Platform as a Service (PaaS) and Software as a Service (SaaS). Challenges of cloud computing include security, privacy, reliability and customization issues.

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Cloud
Computing
Introduction
Abhinav Parmar

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Agenda
What is Cloud Computing?
History of cloud evolution, its Benefits and
characteristics
Cloud Architecture and Building Blocks
Cloud Services (IaaS, PaaS and SaaS)
Types of Clouds
Challenges and cons
Q/A and Open Discussion Session

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Why Cloud Computing in
IT?? IT has revolutionized the Organizations shape
By giving them
-Efficiency
-Productivity
 Growing Awareness for emerging technology
among Enterprise and Consumers
 Need for Utilizing IT resources extensively

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Contd…
Consumer wants…
 Accessing Application by Mobile Devices
 Less spending on IT resources
 Faster Access to Data Storage and
Scalability

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What is Cloud Computing
??Cloud computing is about delivering computing
resources (Hardware and Software) as on-demand
service or virtual infrastructure to clients over the
Network.
"Cloud computing is a model for enabling
convenient, on-demand network access to a shared
pool of configurable computing resources (e.g.,
networks, servers, storage, applications, and
services) that can be rapidly provisioned and
released with minimal management effort or service
provider interaction."

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Users can access Application
through
-- web browser
-- light-weight desktop or
-- mobile app
Business software and user's
data are stored on servers at a
remote location.

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Upfront Benefits
Cloud computing enables business enterprises
Reduced infrastructure costs (because of “pay-per-use”)
Faster running Applications
Improved manageability, flexibility and less maintenance
Robust Scalability
Reduced IT operational costs by outsourcing Resources
Allocating saved Reduced IT cost to achieve Business
Organization Goals

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Key Characteristics
•On-demand self-service
•Ubiquitous network access
•Location independent resource pooling
•Rapid elasticity
•Pay per use

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History and Market Drivers

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Financial Drivers
• Cheaper and better
• Cost Efficiency in IT services
• Infrastructure cost saving
 Storage
 Servers
 CPU
• Pay as you use

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Technology Drivers
•Web Services
•Demand for Mass Scalability for Rapid User Growth
•Standard API
•Virtualization
•Converged
•Faster networks

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What Cloud Computing doesn’t
…..
 Moving to cloud doesn’t mean no system administration.
 Increasing resources doesn’t compensate for bad
architecture of your system/application.
 Still configuration and versioning issues with large
cluster of machines.
 Performance and Scaling are more than problems with
resources
 Applications/Systems migration is not just a click away

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Building Blocks
The cloud computing model is comprised of a front end and a
back end. They are connected through a network
Front End
The front end is the kind of user interface by which the user interacts
with the system.
The front end is composed of a client computer, or the computer
network of an enterprise, or the applications used to access the
cloud.
Back End
The back end is the cloud itself
The back end provides the applications, computers, servers, and
data storage that creates the cloud of services.

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Cloud Computing Services
IaaS
Utility computing
data center
providing on
demand server
resources
•HP Adaptive Infrastructure
as a Service
•Rackspace
•Amazon E2C & S3
PaaS
Hosted application
environment for
building and
deploying cloud
applications:
•Salesforce.com
•Amazon E2C
•Microsoft Azure
SaaS
Service
Applications,
typically available
via the browser
Google apps
Picasa
E-Calendar

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Infrastructure as a Service (IaaS)
It consists of the physical assets —
Virtual machine, servers, network devices, storage disks, etc.
We have control of the operating systems, storage, deployment
applications, and, to a limited degree, control over select networking
components.
Service providers offers capacity for rent, basically hosted Data Centers
& Servers
Example
Print On Demand (POD)
The POD model is based on the selling of customizable products.
PODs allow individuals to open shops and sell designs on products.
With cloud storage capabilities, a POD can provide unlimited storage
space.

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Platform as a Service (PaaS)
It provides—
operating system, programming language execution environment,
database and web server
It provides a way to deploy applications to the cloud using programming
languages and tools supported by the provider.
Platform as a Service (PaaS) provides access to operating systems and
associated services.
Example
PaaS has providers such as Amazon's Elastic Compute Cloud (EC2),
Google App Engine
Application developers can develop and run their software solutions on a
cloud platform without the cost and complexity of buying and managing the
underlying hardware and software layers.

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Software as a Service
(SaaS)
Applications run here and are provided on demand to users.
Example
Software as a Service (SaaS) has providers such as Google Pack.
Google Pack includes Internet accessible applications, tools such as
Calendar, Gmail, Google Talk, Docs, and many more.
Social Networking Websites (Facebook, Twitter, soundcloud)

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Categorized Cloud Services

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Types of Cloud
Public clouds are available to the general public or a large
industry group and are owned and provisioned by an
organization selling cloud services. i.e. Amazon
Private clouds exist within your company's firewall and are
managed by your organization. They are cloud services you
create and control within your enterprise. Private clouds offer
many of the same benefits as the public clouds — the major
distinction being that your organization is in charge of setting up
and maintaining the cloud.
Hybrid clouds are a combination of the public and the private
cloud using services that are in both the public and private space.
Management responsibilities are divided between the public cloud

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Challenges Ahead
Data Security and Privacy
Organizational barriers
Reliability (service outage)
Conflicts with Definition of SLAs (Service Level Agreement)
Customization and Integration with other applications is
difficult

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Q/A and Discussion Session…

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Thank you