The document provides an overview of cloud computing, highlighting its utility-based pricing model and comparison with grid computing. It discusses various cloud service models such as SaaS, PaaS, and IaaS, along with the defining characteristics and types of cloud environments including private and public clouds. Key challenges and trends in cloud computing, along with examples of service providers, are also mentioned.

1. What is cloud?
The cloud is a computing service that
charges you based only on the amount of
computing resources we use.
Pay as you go
What is cloud?
The cloud is a computing service that
charges you based only on the amount of
computing resources we use.
Pay as you go
:-By Roshan Bagdiya

2.  Difference between Cloud and
Grid computing
 Introduction
 Why Cloud Computing
 Cloud Service Models
 Types of cloud
 Uses Latest trend and threats
 Revision
OutlinesOutlines

3. Grid vs. Cloud
Grid Cloud
Underlying concept Utility Computing Utility Computing
Main benefit Solve computationally
complex problems
Provide a scalable
standard environment
for network-centric
application development,
testing and deployment
Resource distribution /
allocation
Negotiate and manage
resource sharing;
schedulers
Simple user <-> provider
model; pay-per-use
Domains Multiple domains Single domain
Character / history Non-commercial, publicly
funded
Commercial

4. TheThe LittleLittle Story of Cloud ComputingStory of Cloud Computing
Once upon a time…
I’m Distributed
Computing
 I allow computations to
run on several networked
computers
 I’m cool!
I’m Distributed
Computing
 I allow computations to
run on several networked
computers
 I’m cool!
 I’m Utility Computing
 I package computing
resources as a metered
service
 I’m economic
 I’m Utility Computing
 I package computing
resources as a metered
service
 I’m economic
Cloud Computing
They fell in love, and had a child…

5. Distributed Computing ChallengesDistributed Computing Challenges
4) Cost 5) Security
2) Availability
3) Maintenance
End Users
1) ScalabilityCloud computing characteristics

6. Why Cloud Computing?Why Cloud Computing?
• Cloud Computing Is User Centric
• Cloud Computing Is Task-Centric
• Cloud Computing Is Powerful
• Cloud Computing Is Accessible
• Cloud Computing Is Intelligent
• Cloud Computing Is Programmable

8. Three layers of cloud computing/ServicesThree layers of cloud computing/Services
Software as a Service (SaaS)
Finished applications that you rent and customize
Platform as a Service (PaaS)
Developer platform that abstracts the infrastructure, OS and middleware to drive
developer productivity
Infrastructure as a Service (IaaS)
Deployment platform that abstracts the infrastructure
Infrastructure as a Service (IaaS)
Deployment platform that abstracts the infrastructure

9. Infrastructure-as-a-Service
Security-as-a-Service
Storage-as-a-Service
Integration-as-a-Service
Database-as-a-Service
Information-as-a-Service
Process-as-a-Service
Platform-as-a-Service
Application-as-a-Service
Management/Governance-as-a-Service
Testing-as-a-Service
Organizing the CloudsOrganizing the Clouds

11.  Defined as service-on-demand, where a provider will license
software tailored.
 In the SaaS model, cloud providers install and operate
application software in the cloud and cloud users access the
software from cloud clients.
 Cloud users do not manage the cloud infrastructure and
platform where the application runs.
 This eliminates the need to install and run the application on
the cloud user's own computers, which simplifies maintenance
and support.
 Examples of SaaS include: Google Apps, Microsoft Office 365,
Onlive, GT Nexus, Marketo, and TradeCard.
SaaSSaaS

13. PaaSPaaS
In the PaaS model, cloud providers deliver a
computing platform typically including operating system,
programming language execution environment, database, and
web server.
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.
Examples of PaaS include: AWS Elastic Beanstalk,
Cloud Foundry, Heroku, Force.com, EngineYard, Mendix,
OpenShift, Google App Engine, Windows Azure Cloud Services
and OrangeScape

15. IaaSIaaS
In the most basic cloud-service model, providers of IaaS offer
computers physical or (more often) virtual machines and other
resources.
IaaS clouds often offer additional resources such as a virtual-
machine disk image library, raw (block) and file-based storage,
firewalls, load balancers, IP addresses,
virtual local area networks (VLANs), and software bundles.[
 IaaS-cloud providers supply these resources on-demand from
their large pools installed in data centers.
Examples of IaaS providers include: Amazon EC2,
Azure Services Platform, DynDNS, Google Compute Engine,
HP Cloud, iland, Joyent, LeaseWeb, Linode, NaviSite,
Oracle Infrastructure as a Service, Rackspace Cloud,
ReadySpace Cloud Services, ReliaCloud, SAVVIS, SingleHop,
and Terremark

18. Cloud APIs
One of the key characteristics that
distinguishes cloud computing from standard
enterprise computing is that the infrastructure
itself is programmable.
Instead of physically deploying servers,
storage, and network resources to support
applications, developers specify how the same
virtual components are configured and
interconnected.

19. Some Cloud Service ProvidersSome Cloud Service Providers
Utility ComputingUtility Computing
Platform as a Service
(PaaS)
Platform as a Service
(PaaS)
Cloud-based User
Applications
Cloud-based User
Applications

20. GoogleApp Engine
Other Cloud ProvidersOther Cloud Providers
GoGrid Cloud Hosting
Joyent Accelerators
Mosso Cloud Hosting

21.  Hardware & Software which
Delivers cloud applications,
Consumes cloud services
Commercial Examples
 Web Browsers (IE, Firefox, Google Chrome)
Mobiles (iPhone, Android, Windows Mobile)
Cloud ClientsCloud Clients

22. Source: Wikipedia
Clear cloud
Rainy cloud
Entering in The cloud
Types of Cloud ComputingTypes of Cloud ComputingTypes of Cloud ComputingTypes of Cloud Computing

23. Types of Cloud ComputingTypes of Cloud ComputingTypes of Cloud ComputingTypes of Cloud Computing

24. Private Cloud
 also known as internal cloud
Neologism
hosted services to a limited number of people
behind a firewall.
wants more control over their data

25. Public Cloud
 also known as external cloud.
 resources are dynamically
provisioned on a fine-grained
Self-service basis

27. Advantages
Uses
 Peer-to-peer / volunteer computing
(Bittorrent,Skype)
 Web application (Facebook)
 Software as a service (Google Apps, SAP )
 Software plus services (Microsoft Online Services)
Uses
 Peer-to-peer / volunteer computing
(Bittorrent,Skype)
 Web application (Facebook)
 Software as a service (Google Apps, SAP )
 Software plus services (Microsoft Online Services)
Disadvantages

28. Next?
Latest Trends
 Integrating more scripting languages
 Data center volumes
 Open source cloud computing (Red Hat)
Salesforce for Google apps
Latest Trends
 Integrating more scripting languages
 Data center volumes
 Open source cloud computing (Red Hat)
Salesforce for Google apps

29. Government Revenue
Bringing it all together to peel back the
layers of control ownership and address
concerns for trusted Cloud adoption.
29
Control
Requirements
Provider
Assertions
Private,
Community &
Public Clouds
Private,
Community &
Public Clouds

30. Cloud “Threats” – Top 3
1. Authentication abuse
2. Operations breakdown
3. Misuse of cloud-specific technology
30

31. Hacker!!!!!!Hacker!!!!!!

32. Any Queries
REVISION

33. All of this TOGETHER: The Cloud
CommunityCommunity
CloudCloud
PrivatePrivate
CloudCloud
Public CloudPublic Cloud
Hybrid Clouds
Deployment
Models
Service
Models
Essential
Characteristics
Common
Characteristics
Software as a
Service (SaaS)
Platform as a
Service (PaaS)
Infrastructure as a
Service (IaaS)
Resource Pooling
Broad Network Access Rapid Elasticity
Measured Service
On Demand Self-Service
Low Cost Software
Virtualization Service Orientation
Advanced Security
Homogeneity
Massive Scale Resilient Computing
Geographic Distribution
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