Cloud Computing

What is Cloud Computing?
provision of computational resources on demand via a computer network.

Type Of Services
• Customers rent software hosted by the vendor.
SaaS
Software-as-a-Service
• Customers rent infrastructure and programming tools
hosted by the vendor.
PaaS
Platform-as-a-Service
• Customers rent processing, storage, networking and
other fundamental computing resources
IaaS
Infrastructure-as-a-Service

SaaS
Software-as-a-Service
 It's all On Demand
 Rich Internet application web sites
 Office Productivity
• E.g.: Flickr, Salesforce.com, Cisco WebEx office, Gmail,
IBM

PaaS
Virtual Development-platform-as-a-service
Database
App Servicer
Reduce cost of buying & managing S/w & H/w
Example : Google App Engine, Microsoft SQL Server Data
Services, Engine Yard, Salesforce.com’s Force.com

IaaS
• Backbone of Entire system
• Physical storage space
• Processing capabilities
• Systems Management
• E.g.: Akamai, Amazon EC2, CohesiveFT, Mosso, Joyent Accelerators

Utility Computing
Platform as a
Service (PaaS)
Cloud-based User
Applications

Cloud Benefits
• Cloud = Less Investment
(not own data center, hardware; use outside
provider of servers, storage, and bandwidth)
• Cloud = Scale
(tens of thousands of server computers)
• Cloud = Flexible and Efficiency

Deployment Models

• Trust, Privacy and Availability
• Performance, Ownership & Cost Savings
• Creation and adoption of new software development
processes and training
• Security, Legal and Regulatory issues

hardware
software
facilities
power/cooling
IT labor
supp
ort
network
security
maintena
nce
managem
ent tools
disaster
recovery
backup
Acquisition cost is 10%
of IT Spend
Operating cost is 90%
of IT Spend
Source: IDC

• It is a platform for running windows
application and storing their data in the
cloud. It is mostly known as Windows
Azure.
• Nearly every application uses some
platform, software on the machine it runs
on.
• There are two kinds of platforms.
– 1) On-premises platform,
– 2) Cloud Platform.
What Azure Mean?

• It include various support function, such as
standard library, storage and a base os.
• On-Premises: One that will run within an
organization.
• Cloud : It allow developers to write
application that running the cloud.
• Azure supports both platform.
What is Platform?

Cloud Hosting Patterns

Cloud Hosting – Web Role