1. A walk in the clouds March 29, 2009
Mark Powell, Chief Architect, Zurich Financial Services
Andy Caddy, Head of Enterprise Architecture, Easyjet

2. Agenda First some myths Some background So what is the cloud?
Some Examples
Easyjet venture into Cloud Computing
So?
24/02/2019

3. First some Myths
Myth 1
Cloud computing is an architecture or an infrastructure
Myth 2
Every vendor will have a different cloud
Myth 3
SaaS is the cloud
Myth 4
Cloud computing is a brand new revolution
Myth 5
All remote computing is cloud computing
Myth 6
The Internet and the Web are the cloud
Myth 7
Everything will be in the cloud
Myth 8
The cloud eliminates private networks
Cloud computing myths are growing as the phenomenon gains popularity.
These issues generally relate to vendor attempts to align cloud messaging with the historical products and services they provide. However, some of these issues are related to general misunderstandings and hype about the cloud.
24/02/2019

4. Some Background
For years scientists have mapped the internet – the results of millions of connections looked like a ‘cloud’
24/02/2019

5. Infrastructure as a Service
It is useful to think of Cloud Computing as a series of layers
Software as a Service
Platform as a Service
Infrastructure as a Service
Orchestration
Process as a Service
Orchestration includes services such as monitoring, management,
integration, security, ID, authorization, and optimization that wrap
around the other layers
24/02/2019

6. Infrastructure as a Service
The layers of the cloud can be accessed directly by many different clients
Software as a Service
Platform as a Service
Infrastructure as a Service
Orchestration
Process as a Service
24/02/2019

7. Four pressures are driving Cloud Computing
Consumerization
- Massive scale services
- Tech smart consumers
Collaboration
- Businesses moving from vertical integration to horizontal, networked business model
Computing Anywhere
- Rising demand for mobility to support faster response to customers
Corporate IT challenges
- OPEX, CAPEX, DC power, space, business responsiveness
24/02/2019

8. So what is the Cloud? A definition to work from
“Massively, scaleable IT Capabilities provided “as a Service” to multiple customers using internet technologies.
More about the What (Service) rather than the How (technology)”
Some attributes
Pay per use – Opex v Capex
Internet Connectivity
Scaleable, Elastic and Shareable
24/02/2019

9. However, Is there only one kind of Cloud?
There are at least three to my knowledge:
Open (The Internet Cloud)
Internal (OnDemand Compute Power)
External (Shared OnDemand Compute Power capability)
24/02/2019

10. Examples of Cloud Computing
Software as a Service:
Salesforce.com
Gmail
Zoho
Facebook
Platform as a Service:
3Tera
Google Application Engine
Coghead
Infrastructure as a Service:
Amazon AWS
Joyent
Mosso
Nirvanix
Management as a Service:
CohesiveFT
RightScale
Appistry
Elastra
Appirio
Process as a Service:
Sales
Payroll
E-Procurement
Provisioning
Supply chain
Information service
Note: overlap is common
24/02/2019

11. John Willis’s list of the top 10 enterprises in the Cloud – as of 13 July 2008
24/02/2019

12. Cloud Computing at BP
BP was interested in the early Amazon EC2 announcements
CSC LEF helped BP gain access to the closed beta programme
Initial experiments were promising, including running SAP R3
Downstream Oil decided to build a new web site
The typical response from the IT was a three month wait
That afternoon, they started on Amazon EC2
Their Amazon EC2 experience was so good they wanted to go production … leading to an interesting security discussion
A big cycle time reduction is coming from using EC2 as a sandbox for SAP development
24/02/2019

13. Andy Caddy Head of Enterprise Architecture, Easyjet
24/02/2019

14. So?
In the aftermath of the Economist’s 14 page insert on Cloud Computing more and more IT executives being asked by their business partners, “I hear that Cloud Computing is cheaper – are we using it – can we use it?”
Some barriers exist:
Technical education, at both the architect and the implementer level
Business education. Learning how to deal with tech smart customers who want to be involved
Adoption of new standards, such as using Cloud specific tools, such as SimpleDB or BigTable, instead of reflexively using SQL
Server hugging, discomfort at not being able to physically see and touch your equipment
Risk assessment, understanding what risks are involved in Cloud Computing
Conducting a candid assessment of your current security
Risk mitigation, developing approaches that help us deal with computing in the Cloud
Need for an orchestration layer/provider to reduce implementation complexity
24/02/2019

15. What should we move to the Cloud?
What would save us the most money? ( this implies that we know what things cost today )
What could we turn off in the data center if it runs well in the Cloud?
What systems have the most variation and would benefit from the ability of the Cloud to turn on and off?
What systems would become much more agile if we moved them to the Cloud?
What systems would benefit from having part of the computation done in the Cloud? (so called Cloudbursting )
24/02/2019

16. Where would we move into the Cloud stack?
Should we use Infrastructure as a Service, such as Amazon EC2, and just substitute the Cloud for our Data Center?
Do we need the granular control that IaaS provides
Should we use Platform as a Service and avoid having to worry about the details?
Could we replace our existing app with Software or Process as a Service, especially consumerized services?
As you move down the stack you gain greater control, but at the expense of having to deal with more complexity.
As you move up the stack to gain freedom from the detail, but at the expense of having to abide by decisions made by the provider.
24/02/2019

17. So?
If you need computing in a hurry, or have peak loads, you should look at Cloud Computing today
The current economics of Cloud Computing revolve around turning machines off when not in use
The cost advantage of Cloud storage can be significant
Cloud bursting could allow us to run our DCs at higher utilization
Cloud technology can be used internally for private Clouds
Buy-off of their paper, but read the terms of use, especially around items such as service termination and data privacy
Figuring out whether a particular Cloud is secure enough for your purpose begins with a candid assessment of your existing security
Federated identity is needed to exploit the Cloud – push the vendors
Get ready to collaborate in the Cloud
24/02/2019

18. 24/02/2019