Defination,history,types and model of cloud along with advantages and disadvantages.

1. CLOUD COMPUTING

2. Cloud Computing
 Distributed computing on internet Or delivery of computing
service over the internet.
 Instead of keeping data on your own hard drive you use a
service over the Internet, at another location, to store your
information or use its applications.
 Cloud services are popular because they can reduce the
cost and complexity of owning and operating computers
and networks.
 Cloud benefits to users include scalability, reliability, and
efficiency.

3. HISTORY
 "cloud computing" gradually evolved in 1950’s when large-scale
mainframes were made available .
 The real implementation of virtual machines came in the 70s
when IBM released an operating system called VM.
 In the 1990s, telecommunications companies began offering
virtual private network (VPN) services with comparable quality
of service, but at a lower cost.

4. Architecture

5. CHARACTERISTICS
 Service
 Rapid Elasticity
 On-Demand Self-Service
 Ubiquitous Network Access
 Resource Pooling

6. TYPES OF CLOUD

7. Public Cloud
 Public clouds are owned and operated by third
parties, they deliver superior economies of scale
to customers, as the infrastructure costs are
spread among a mix of users, giving each
individual client an attractive low-cost, “Pay-as-you-
go” model. y third parties; they deliver
superior economies of scale.

8. Private Cloud
 Private clouds are built exclusively for a single
enterprise.
 They aim to address concerns on data security
and offer greater control, which is typically
lacking in a public cloud.

9. Hybrid Cloud
 Hybrid Clouds combine both public and private cloud
models.
 With a Hybrid Cloud, service providers can utilize 3rd
party Cloud Providers in a full or partial manner thus
increasing the flexibility of computing.
 The Hybrid cloud environment is capable of providing
on-demand, externally provisioned scale

11. Cloud Computing Services
 SaaS (Software as a service): Required
software, Operating system & network is
provided.
 PaaS (Platform as service): Operating system
and network is provided.
 IaaS (Infrastructure as a service): just Network
is provided.

12. Cloud Computing Services

13. Saas (Software As a Service )
 We can access this cloud hosted application
without any additional hardware or software.
 E.g. : G-mail, Yahoo mail, Hotmail etc.,

14. Paas (Platform As a Service )
 Give us nice API (Application Programming
Interface) and take care of the implementation.
 It is a platform for developers to write and create
their own SaaS. i.e. applications.

15. Iaas (Infrastucture As a Service )
 It is also known as hardware as a service.
 Iaas is a computing power that you can rent for a
limited period of time.
 allows existing applications to be run on a cloud
suppliers hardware.

16. ADVANTAGES
 Software as a Subscription
 Reduced Software Maintenance
 Increased Reliability
 Environmentally Friendly
 Cost Reduction
 Portability/Accessibility

17. DISADVANTAGES
 Bandwidth could bust your budget
 App performance could suffer
 Data might not be cloud-worthy
 Too big to scale

18. Conclusion
 Cloud Computing is the fastest growing part of IT.
 Tremendous benefits to customers of all sizes
storage space.
 Cloud services are simpler to acquire and scale
up or down

19. conclusion
 Public clouds work great for some but not for all
applications.
 Private clouds offer many benefits for internal
applications.
 Public and private clouds can be used in
combination.

20. Real Time Application
 Google -Network
Made up of millions of servers, which stores
amounts of data.
 Amazon’s Elastic Compute Cloud-Amazon
It provides resizable computing capacity on cloud,
Developer’s only pay for capacity they use.