This document discusses cloud computing and provides details about it. It lists the members of the group that created the document. It then defines cloud and cloud computing, describes the characteristics of cloud computing including availability, easy maintenance, resource pooling, and rapid elasticity. It discusses the different types of clouds: Infrastructure as a Service (IaaS), Platform as a Service (PaaS), and Software as a Service (SaaS). It also outlines some of the advantages of cloud computing such as lower computer costs and improved performance, as well as some disadvantages like requiring an internet connection and potential security and data loss issues.

1. Cloud Computing

2. Members of group
Akshitha P. R. K MGT/2014/2015/011
Dilshan P. I MGT/2014/2015/054
Rathnamalala R. B. S. S MGT/2014/2015/225
Siriwardana G. G. H. E MGT/2014/2015/259
Wijekoon K. W. W. M. S. D MGT/2014/2015/301

3. Content
1. What is cloud?
2. What is cloud computing?
3. Characteristics of cloud computing
4. Types of clouds
5. Difference
6. Advantages of cloud computing
7. Disadvantages of Cloud Computing

4. What is Cloud?
Cloud is something which is present at a remote location.
It can be used as symbolize the Internet.
Ex: As a personal or business cloud computing user, you access your stored
information on the 'cloud', via an Internet connection.

5. What is Cloud Computing?
Cloud computing means storing and accessing data and programs over the
Internet instead of your computer's hard drive.
Clouds may be limited to a single organization (enterprise clouds), or be
available to many organizations (public cloud).

6. Characteristics of cloud computing
 Availability
The capabilities of the Cloud can be modified as per the use and can be extended a
lot. It analyzes the storage usage and allows the user to buy extra Cloud storage if
needed for a very small amount.
Easy Maintenance
The servers are easily maintained and the downtime is very low and even in some
cases, there is no downtime. Cloud Computing comes up with an update every time
by gradually making it better.

7. Continue….
Resources Pooling
It means that the Cloud provider pulled the computing resources to provide services to multiple
customers with the help of a multi-tenant model. There are different physical and virtual
resources assigned and reassigned which depends on the demand of the customer.
Rapid elasticity
Capabilities can be elastically provisioned and released, in some cases automatically, to scale
rapidly outward and inward commensurate with demand.

8. Continue….
 Security
The data is stored within the storage devices, which cannot be hacked and utilized by any other
person. The storage service is quick and reliable.

9. Types of clouds
IaaS (Infrastructure-as-a-Service)
PaaS (Platform-as-a-Service)
SaaS (Software-as-a-Service)

10. IaaS
cloud-computing offering in which a vendor provides users access to computing resources such as
servers, storage and networking.
provides you the computing infrastructure, physical or (quite often) virtual machines and other
resources
Ex 1. Amazon Web Services (AWS)
AWS helps companies store data and deliver content
EX 2. Microsoft Azure
allows for building, testing, and managing applications through a network of Microsoft data
centers.

11. PaaS
PaaS builds on the IaaS.
(PaaS) is a concept that describes a computing platform that is rented or delivered as an integrated
solution, solution stack or service through an Internet connection.
The PaaS service delivery model allows a customer to rent virtualized servers and associated services
used to run existing applications, or to design, develop, test, deploy and host applications.
Ex: AWS Elastic Beanstalk, Heroku, Windows Azure (mostly used as PaaS), Force.com,
OpenShift, Apache Stratos, Magento Commerce Cloud.

12. SaaS
SaaS is a model for the distribution of software where customers access software
over the Internet.
Ex: Google Apps, Dropbox, Salesforce, Cisco WebEx, Concur,
GoToMeeting

13. Difference …

14. Advantages of cloud computing
Lower computer cost
Improved performance
Reduce software costs
Instance software updates

15. Disadvantages of Cloud Computing
Requires a constant internet connection
Store data can be lost
Stored data might not be secure
Does not work well with low speed connection

16. Questions?