1. An Introduction to Cloud Computing

2. Add new services for your users quickly and cost effectively
The challenge
Add new services for your users quickly and cost effectively

3. Expand your Infrastructure!
Buy new servers, increase your software costs, provision more data center capacity!!

4. Look to the cloud!
Pay for the bandwidth and server resources that you need. When your push is done then turn the whole thing off!

5. What is Cloud Computing? What is the cloud? 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 power over 100 yrs ago
Now computers are simple devices connected to the larger cloud
Data processing, storage and software applications that used to run locally are now being supplied by big central computing stations. They're becoming, in essence, computing utilities.
What is
Cloud Computing?

6. The hype
Cluster Computing
Cloud Computing
Grid Computing 

7. Infrastructure as a Service
SaaS
Software as a Service
PaaS
Platform as a Service
IaaS
Infrastructure as a Service

8. SaaS
Software as a Service

9. Software delivery model
SaaS
Software delivery model
Increasingly popular with SMEs
No hardware or software to manage
Service delivered through a browser

10. Advantages SaaS Pay per use Instant Scalability Security Reliability
APIs

11. Examples Commercial Services: SaaS CRM Financial Planning
Human Resources
Word processing
Commercial Services:
Salesforce.com
cloud

12. PaaS
Platform as a Service

13. Platform delivery model
Platforms are built upon Infrastructure, which is expensive
Estimating demand is not a science!
Platform management is not fun!
PaaS

14. Popular services
Storage
Database
Scalability
PaaS

15. Advantages Pay per use Instant Scalability Security Reliability APIs
PaaS

16. Examples
Google App Engine
Mosso
AWS: S3
PaaS

17. Infrastructure as a Service
IaaS
Infrastructure as a Service

18. Computer infrastructure delivery model
Access to infrastructure stack:
Full OS access
Firewalls
Routers
Load balancing
IaaS
Sometimes called Utility computing

19. Advantages Pay per use Instant Scalability Security Reliability APIs
IaaS
Sometimes called Utility computing

20. Examples
Flexiscale
AWS: EC2
IaaS
Sometimes called Utility computing

21. Infrastructure as a Service
SaaS
Software as a Service
PaaS
Platform as a Service
IaaS
Infrastructure as a Service

22. Common Factors SaaS Pay per use Instant Scalability Security
Reliability
APIs
PaaS
IaaS

23. Advantages SaaS Lower cost of ownership
Reduce infrastructure management responsibility
Allow for unexpected resource loads
Faster application rollout
PaaS
IaaS

24. Cloud Economics SaaS Multi-tenented
Virtualisation lowers costs by increasing utilisation
Economies of scale afforded by technology
Automated update policy
PaaS
IaaS

25. Examples of usage

26. SaaS
Your current CRM package is not managing the load or you simply don’t want to host it in-house….use a SaaS provider such as Salesforce.com
Your is hosted on an exchange server in your office and it is very slow…outsource this using Hosted Exchange.

27. You need to host a large file (5Mb) on your website 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 capacity…use Amazon S3.
PaaS

28. You want to run a batch job but you don’t have the infrastructure necessary to run it in a timely manner. Use Amazon EC2.
You want to host a website, but only for a few days. Use Flexiscale.
IaaS

30. Network Design
Management Node
Various scan arrays
Cloud burst

31. Administration (ARACNE)
Hosted in the Databanx
facility in Newcastle
Over £250,000 invested
Redundant hardware

32. Our scan arrays Each scan array contains 9 servers
Each array can scan over 1m s a day at 20% utilisation

38. Cloudburst New scan array in 5 minutes Cost of $0.90 per hour
Use only when your network needs a burst of capacity.

39. Why Cloud Computing? Pay per use Instant Scalability Security
Reliability
APIs