Definitions

“A pool of abstracted, highly scalable, and managed computer infrastructure capable of hosting end-customer applications and billed by consumption”

“Cloud computing is an emerging approach to shared infrastructure in which large pools of systems are linked together to provide IT services.”

The “Cloud Computing ” advantages

• Ease of Use• Scalability• Risk• Reliability• Cost

Ease of Use

• Deploy infrastructure with a mouse or API– No cabling, screwdrivers, racking, unboxing, buying– Middle of the night– Do it yourself remotely from anywhere anytime

Scalability

1.Control your infrastructure with your application demands.2.No need to purchase expensive hardware's for scalability.

Risk

1. Nothing to buy2. Cancel immediately3. Change instantly, even operating systems4. Throw it out5. Rebuild it instantly after testing

RISK

Reliability

1. Based on High quality hardware2. Design for failures:

› Automatically spin up replacements› Use multiple clouds

Cost

1. Pay for only what you use2. No need to buy in advance3. Zero Capital Outlay 4. No contracts

Defining the Segments

• SaaS – Software as a Service

• PaaS – Platform as a Service

• IaaS – Infrastructure as a Service Storage as a Service

Cloud “Applications”

• In SaaS no need to buy expensive licensed applications• Examples: SalesForce, Gmail, Yahoo! Mail, Quicken Online• Instead of selling you a copy of Microsoft Word for $300, a cloud

computing model would "rent" word processing software to you through the Internet for perhaps 5 dollars a month.

• Advantages: Free, Easy, repair a single central copy of the product online• Disadvantages: Limited functionality, no control or access to underlying

technology, you have to trust into the online software vendors.

Cloud “Platforms”• “Containers”• “Closed” environments• Examples: Google App Engine(support only java &

python), ,Force.com(support 16 languages)[5] ,Windows Azure(.Net,java,Php), Mosso, Engine Yard, Joyent

• Advantages: Good for developers, more control than “Application” Clouds, tightly configured

• Disadvantages: Restricted to what is available, other dependencies

Cloud “Infrastructure”• Provide “Compute” and “Storage” clouds• Virtualization layers (hardware/software)• Examples: Amazon EC2, GoGrid, Amazon S3, Nirvanix, Linode• Advantages: Full control of environments and infrastructure• Disadvantages: premium price point, limited competition

The “Cloud Pyramid”

•Layers equate structure•Building blocks: Infrastructure, Platforms, Applications

The “Cloud Pyramid” Inversed

1000’s of Cloud Applications currently Handful of Cloud Platforms Elite group of Cloud Infrastructure providers

# of Marketplace providers

Cloud “Extenders”• Provides extension to Cloud Infrastructure and Platforms with basic

functionality• Examples: Amazon SimpleDB, Amazon SQS, Google BigTable• Advantages: Extends functionality of Compute & Storage Clouds to

integrate with other clouds• Disadvantages: Sometimes requires use of specific Platforms or

Infrastructure

Cloud “Aggregators”• Sits on top of various Cloud Infrastructures for management• Examples: RightScale, Appistry• Advantages: Provides more options for Cloud environments• Disadvantages: Dependent on Cloud Providers

The NEW “Cloud Pyramid”

Amazon.com

• American multinational electronic commerce company. with headquarters in Washington.

• It is the world's largest online retailer. and is a major provider of cloud computing services.

Amazon Web Services

• Offerings• Hardware as a Service(HaaS) AWS-EC2• Storage as a Service – AWS-S3• Database as a Service – SimpleDB• Queuing as a Service – SQS

Cont..

Aggregate Offerings•Pretty much anything you can think off•Oracle , Solaris , Hadoop Clusters (NY times), Specialized Applications (Vertica DB) , Animoto

Amazon’s EC2

• Amazon Elastic Compute Cloud (Amazon EC2) is a web service that provides resizable compute capacity in the cloud. It is designed to make web-scale computing easier for developers.

• EC2 is still largely used for batch-style, asynchronous jobs such as crunching large statistics or encoding video (although increasingly more are using it for their full web server setup)

Cont..

The auto-scaling open-source Amazon EC2.•Scalr is a recently open-sourced framework for managing the massive serving power of Amazon’s Elastic Computing Cloud (EC2) service.

Amazon S3

• Amazon S3 is storage for the Internet. It is designed to make web-scale computing easier for developers.

• Data Security with Access Control and Using Data Encryption

• Data Durability and Reliability

Amazon SimpleDB

• Amazon SimpleDB is a distributed database written in Erlang by Amazon.com. It is used as a web service in concert with Amazon Elastic Compute Cloud (EC2) and Amazon S3.

• “Amazon SimpleDB is a highly available and flexible non-relational data store that offloads the work of database administration. Developers simply store and query data items via web services requests and Amazon SimpleDB does the rest.”

Amazon SQS

• Amazon Simple Queue Service (Amazon SQS) is a distributed queue messaging service introduced by Amazon.com.

• Reliable• Simple• Scalable• Secure• Inexpensive

Hosting Industry needs Change

• Technology has evolved• People demand more control• Instant gratification• Managed is not dynamic enough

Cloud Computing -“Enabling Technology” to move from Traditional Hosting to Cloud

Hosting

Colo vs. Managed vs. Cloud Hosting

Colocation Managed Cloud

Time Weeks to Months Days to Weeks Minutes

Scalability Slowest, Rigid & Costly Slower, somewhat flexible, Costly

Instant, Flexible, Pay-per-usage

Cost High Costly, sometimes month/year contracts,

No contracts, usage based, no upfront costs

“Green” Low Low High - virtualized

Pricing model Buy Servers & Colo costs whether used or not

Rent Servers & Hosting costs whether used or not

Rent based on usage only

Summary Infrastructure as a Service (IaaS) provides the

user with virtual infrastructure, such as servers and data storage space. This is where virtualization fits into the cloud.

Platform as a Service (PaaS) provides the user with development environment services where the user can create and run home-grown applications.

Software as a Service (SaaS) provides the user with access to already created applications that are operating in the cloud.

References

1. http://www. amazon.com2. http://wikipedia.org 3. http://saasevolution.blogspot.com 4. https://developers.google.com/appengine/6. http://www.microsoft.com/azure/ 7. http://aws.amazon.com/8. http://open.blogs.nytimes.com/tag/aws/