94bacloud Computing by Mohit

8/6/2019 94bacloud Computing by Mohit

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Cloud Computing


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The challenge

Add new services for your users quickly

and cost effectively


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Expand your

Infrastructure!

Buy new servers,

increase your

software costs,

provision more

datacenter capacity!!


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Look to the cloud!

Pay for the bandwidthand server resources

that you need. When

your push is done

then turn the whole

thing off!


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What is t

hecloud

?

IT as a service

Cloud allows access to services without user technical knowledge or

control of supporting infrastructure

Best described in terms of what happened to mechanical powerover100 yrs ago

Now computers are simple devices connected to the largercloud

Data processing, storageand softwareapplications that used to runlocally are now being supplied by big central computing stations. They'rebecoming, in essence, computing utilities.

What isCloud Computing?


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Cloud

internet


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What is the cloud?

IT as a service

Cloud allows access to services without user technical knowledge or controlof supporting infrastructure

Best described in terms of what happened to electrical power over 100 yearsago

Now computers are simple devices connected to the larger cloud

Data processing, storage and software applications that used to run locallyare now being supplied by big central computing stations. They're becoming,in essence, computing utilities.


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Why Cloud Computing

Data centers are notoriously underutilized, often idle 85% of the time

Over provisioning

Insufficient capacity planning and sizing

Improper understanding of scalability requirements etc

Including thought leaders from Gartner, Forrester, and IDCagree that

this new model offers significant advantages for fast-paced startups,

SMBs and enterprises alike.

Cost effective solutions to key business demands

Move workloads to improve efficiency


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Cloud Computing: What It Isand What It

Isnt

What It is ?

With traditional desktop computing, you run copies of software

programs on each computer you own. The documents you create are

stored on the computer on which they were created ( PC centric )

With cloud computing, the software programs you use arent run

from your personal computer, but are rather stored on servers

accessed via the Internet.

( Document Centric )


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Cloud Computing: What It Isand What It

Isnt

What It Isnt ?

First, cloud computing isnt network computing. With network

computing, applications/documents are hosted on a single companys

server and accessed over the companys network.

Cloud computing is a lot bigger than that. It encompasses multiple

companies, multiple servers, and multiple networks.

Network computing - Access is over the companys network only


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Cloud Computing Services

Cloud Computing - cloud services and storage are accessible from

anywhere in the world over an Internet connection


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Grid Cloud

Underlying concept Utility Computing Utility Computing

Main benefit Solve computationally

complex problems

Provide a scalable

standard environment fornetwork-centric

application development,

testing and deployment

Resource distribution /

allocation

Negotiate and manage

resource sharing;

schedulers

Simple user provider

model; pay-per-use

Domains Multiple domains Single domain

Character / history Non-commercial, publicly

funded

Commercial

Grid vs Cloud


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IaaSInfrastructure as a Service

PaaSPlatform as a Service

SaaSSoftware as a Service


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Software Delivery Model

We use the provider apps

User doesnt manage or control the network,

servers, OS, storage or applications

Increasingly popular with SMEs

Service delivered through a browser

SaaS


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Examples CRM

Financial Planning

Human Resources

Word processing

Commercial Services: Salesforce.com

emailcloud

SaaS


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Platform delivery model

User deploys their apps on the cloud

Controls their apps

User doesnt manage servers, IS, storage

Platforms are built upon Infrastructure,

which is expensive

Estimating demand is not a science!

Platform management is not fun!

PaaS


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Popular services Storage

Database

Scalability

PaaS

Examples Google App Engine

Mosso

AWS: S3


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Computer infrastructure

delivery model

Consumers gets access to the

infrastructure to deploy their stuff Doesnt manage or control the

infrastructure

Does manage or control the OS, storage,

apps, selected network componentsIaaS


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Examples

Flexiscale

AWS: EC2

IaaS


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Common Factors Pay per use

Instant Scalability

Security

Reliability

APIs

IaaS

PaaS

SaaS


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Advantages

Lower cost of ownership

Reduce infrastructure management

responsibility Allow for unexpected resource loads

Faster application rollout

IaaS

PaaS

SaaS


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Cloud Economics

Multi-tenancy

Virtualisation lowers costs by increasing

utilisation

Economies of scale afforded by technology

Automated update policy

IaaS

PaaS

SaaS


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Cloud Costs

Processing 10 cents an hour

Disk Storage 15 cents/Gb/month


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Examples of usage


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Your current CRM package is not managing

the load or you simply dont want to host it

in-house.use a SaaS provider such as

Salesforce.com

Your email is hosted on an exchange server

in your office and it is very slowoutsource

this using Hosted Exchange.

SaaS


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You need to host a large file (5Mb) on yourwebsite and make it available for 35,000

users for only two months duration. Use

Cloud Front from Amazon.

You want to start storage services on your

network for a large number of files and you

do not have the storage capacityuse

Amazon S3.

PaaS


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You want to run a batch job but you donthave the infrastructure necessary to run it in

a timely manner. Use Amazon EC2.

You want to host a website, but only for afew days. Use Flexiscale.

IaaS


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Cloud Architecture Public Clouds

Private Clouds

Hybrid Clouds


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Public Clouds


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Private Clouds


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Hybrid Clouds


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Conflicts with existing data dispersal and international privacy

laws.

Data ownership.

Service guarantees.

Securing virtual machines.

Massive outages.

Encryption needs.

Security Challenges


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Commercial clouds


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Amazon Elastic Compute Cloud Amazon EC2 web service interface that provides resizable computing

capacity in a cloud

designed to make web-scale computing easier for

developers

reduces the time required to obtain and boot new server

space from weeks to minutes

allows developers to pay only for capacity that they actually

use


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Google 101

Network made up of millions of cheap servers, that would

store staggering amounts of data, including numerouscopies of the world wide web

Makes search faster, helping ferret out answers to billionsof queries in a fraction of a second

Google invests more than $2 billion a year in data

centers for cloud computing.

Google App Engine


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Salesforce.com was found in 1999 by former Oracle

executive Marc Benioff as a company specializing in SaaS

software. They are best known for their Customer Relationship

Management (CRM) products, which it delivers to

businesses over the internet using the SaaS model.

SaaS

Force.com Platform

Web Services

D:\videos\YouTube - Salesforce.com- What is Cloud

Computing-.mp4


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Azure Internet-scale cloud computing and services platform hosted in

Microsoft data centers Provides a range of functionality to build applications that span from

consumer web to enterprise scenarios

Designed to help developers quickly and easily create, deploy, manage,and distribute web services and applications on the internet.

Documents

94bacloud Computing by Mohit