SaaS, PaaS or IaaSWhere will the Enterprise

sit in the Cloud?

Simon Hansford

VP, Service Strategy

Subscription application-as-a-service Software-plus-services

Accountability Private Cloud control

Architecture Platform as a service Cloud Storage

SLA SaaS G-Cloud

Infrastructure as a Service Virtual Private Clouds

Green Computing Cloud Grid Computing

Public Cloud loosely coupled Utilities IT

Infrastructure Utility services resiliency

compliance agility Performance

Security virtualization

=CLOUD

Market definition

Vendors product

name

Analyst definition of Cloud Computing

IDC, Defining “Cloud Services” and

“Cloud Computing”, Cloud Computing

Blog, September

An emerging IT

development, deploymen

t and delivery

model, enabling real-time

delivery of

products, services and

solutions over the

Internet.

IDC

A pool of abstracted,

highly scalable, and

managed compute

infrastructure capable of

hosting end-customer

applications and billed by

consumption.

Forrester, Is Cloud Computing Read for

the Enterprise?,

March 2008

Forrester

A style of computing

where massively scalable

IT-enabled capabilities

are delivered ‘as a

service’ to external

customers using Internet

technologies.

Gartner, Cloud Computing: Defining

and Describing an Emerging

Phenomenon, June 2008

Gartner

5 Essential Cloud Characteristics

On-demand self-service

Broad network access

Resource pooling

Location independence

Rapid elasticity

Measured service

Cloud computing often

leverages:

Scale

Virtualization

Resilient computing

Geographic distribution

Service orientation

Advanced security

technologies

5

On-demand self-service

3 Cloud Service Models

Software as a Service

Cloud Applications Cloud Platforms

Use of an application

over a network

SaaS

Platform as a Service

Deploy customer-

created applications to a

cloud

PaaS

Infrastructure as a Service

Rent

processing, storage and

network capacity

IaaS

3 Cloud Service Models

SaaS PaaS IaaS

VMs on Shared

Infrastructure

Shared App execution

environment

Shared App execution

environment

Fast provisioning &

granular billing

Fast provisioning &

granular billingDynamic sizing and

billing

Specificity General UseTargeted App

Complexity HighConstrained

Pay for application Pay for resource Pay for usage

4 Cloud Deployment Models

Private cloud

enterprise owned or provided by outsourcer

Community cloud

shared infrastructure for specific community

Public cloud

sold to the public, mega-scale infrastructure

Hybrid cloud

composition of two or more clouds“Green”

Cloud

“G-Cloud”

“High Security”

Cloud

“Demo”

Cloud

“Retail” Cloud“NHS” Cloud

The NIST Cloud Definition Framework

Deployment

Models

Service

Models

Essential

Characteristics

Software as a

Service (SaaS)

Platform as a

Service (PaaS)

Infrastructure as a

Service (IaaS)

Resource Pooling

Broad Network Access Rapid Elasticity

Measured Service

On Demand Service

Private

Cloud

Community

Cloud

Public

Cloud

Hybrid Clouds

Courtesy of Microsoft

Works how the business wishes to work

Native Client Experience

Works the WayYou Do

Easy Adaptability

Works the Way Your Business

Does

Available, Secure & Agile

Works the WayTechnology

Should

Courtesy of Microsoft

Cloud

Where applications will resideB

uy

Bu

ild

On premise Cloud

Hosted

Application

Packaged

Application

Software as a

Service

Custom

Application

Hosted

Application

Cloud Platform

ERP

Collaboration

Email

Web site

HR

Core AppCore App

Hosted

Core App

Core App

Cloud Services will …

Increase Your Business Agility

Scale up and down your IT resources (processor, memory, storage

and bandwidth) as your business dictates

Align your existing resources with change in application priorities

Increase Your Service Quality

Increase availability through a resilient design and latest technology

that might otherwise be unaffordable

Future Proof Your IT Infrastructure

Benefit from a seamless upgrade path to latest technology

Reduce Your Capital Costs

Reduce the need to design to maximum capacity

Or own the CAPEX

Environmentally friendly, less resources, less energy

When is Cloud a good fit for the Enterprise?

Average

Usage

Co

mp

ute

Time

Usage

Co

mp

ute

Time

Average

Inactivity

Period

Co

mp

ute

Time

Average

Usage

Co

mp

ute

Time

Average

Usage

Or issues exist with;

• Availability

• Disaster Recovery

• DC space

• Capex

• People Skills

Leading IaaS Cloud Services Platform

Attenda RTI elastic

compute capacity on

demand

1. Comprises Compute Units

of Attenda RTI resource

The smallest compute unit

available is 2GHz processor

and 3GB memory

2. Comprises of dedicated

Virtual Machines

A Virtual Server Farm is

made up of multiples of these

compute units, shared by a

number of virtual machines

i.e. n x (2GHz processor, 3GB

memory) / n x VM’s

Physical Server

Physical Server

Core

Router

Core

Router

Core

Switch

Core

Switch

Private

Cloud

Public

Cloud

SAN

Switch

SAN

Switch

The industrialised Enterprise IaaS Cloud

Physical Server

Physical Server

Core

Router

Core

Router

Core

Switch

Core

Switch

SAN

Switch

SAN

Switch

Physical Server

Physical Server

Core

Router

Core

Router

Core

Switch

Core

Switch

SAN

Switch

SAN

Switch

Physical Server

Physical Server

Core

Switch

Issues & Challenges exist

1

7

Solves some of the burden of IT

Reduces IT capex spend

Tackle server underutilisation

Curtail overbuying

Business Seasonality

Scalable resources on demand

Deliver flexible IT

infrastructure

Serve range of needs from test /

dev to highly available applications

Maximise IT staff resources

Minimise complexity of IT

infrastructure

Address environmental issues

Application management

Application monitoring

Skills in IT Service Operations

Incident, Problem, Change

Release Management

Patch Management

etc, etc

Significant part of the cost and

complexity remains

Your focus incorrectly remains

on IT Operations rather than

IT Strategy

Recommendations

Today

Review your current portfolio of IT applications, infrastructure &

services and map against the 3 Cloud Service Models.

Complete a Cloud readiness Survey.

The next 6 Months

Begin re-education. The culture of "build and manage

everything" has changed completely.

Redefine your IT portfolio in terms of service components (what

it does), instead of what it is built from and how you currently

deliver it.

Are you ready for the Cloud?

Visit stand 842

or

www.attenda.net/cloudsurvey.asp