Cloud computing allows users to store and access data and applications over the internet instead of local hard drives. It includes various service models such as SaaS, PaaS, and IaaS, with advantages like cost-effectiveness and efficiency, but also presents risks regarding security and privacy. The document outlines the structure of cloud computing, including its front-end and back-end components.

1. Cloud Computing
By: Nasir Gondal
https://about.me/nasirgondal

2. Agenda
 What is the cloud?
 How it works?
 Types of cloud
 What are Pros & Cons
 Where is the cloud?

3. What is Cloud?
Cloud computing means storing and accessing data
and programs over the Internet instead of your
computer's hard drive.
It's called
cloud
computing
because the
data and
applications
exist on a
"cloud" of
Web servers

4. Cloud, part of daily life:
• Photos
• Music
• Videos
• Personal data/files

5. What makes cloud?
Front end:
 Internet browser
e.g Internet explorer, Chrome, Safari,
Firefox
 Application:
Sync application like apps on
PC/mobile
Unique Application software
Back end:
 Central Computer
 Storage (Databases)
 Computer network
 Application server

7. Layers of Cloud
SaaS: Software as a Service
PaaS: Platform as a Service
Infrastructure as a Service

9. Types of Cloud

11. Pros & Cons of Cloud
Pros
 Inexpensive option
 Flexible
 Efficient
 Alternative to computing power
Cons
 Security can be compromised
 Privacy can be compromised
 Get hacked
The only security option is data encryption