Cloud computing provides on-demand access to virtualized computing resources and pay-as-you-go billing. It allows for easy scaling up and scaling down of resources. Key advantages include lower costs compared to traditional hosting due to pay-as-you-use billing and ability to access unlimited resources. While similar to concepts like time-sharing and web hosting, cloud computing provides more flexibility and ability to scale resources up and down easily. Major cloud providers include Amazon, Microsoft, Google, and others offering storage, computing and other services. Costs can be very low, enabling new types of applications and businesses.

1. Cloud Computing Soup To Nuts Joe Drumgoole [email_address] http://twitter.com/jdrumgoole http://joedrumgoole.com/blog

2. Cloud Computing : Definition Virtualised Infrastructure Pay as You Use Billing Unbounded access to Resources Scale down as easily as you scale up

3. Virtualised Infrastructure VCPU VCPU VCPU VCPU VCPU VCPU VCPU VCPU Real CPU Real CPU Shared Disk Shared Disk Shared Disk Shared Disk

4. Pay as You Use Billing

5. Unbounded Access To Resources

6. Scale Down as Easily as you Scale Up

7. Isn't it Just like... Mainframes Time Sharing Web Hosting Co-location 1m up front fee Your process can ruin my day Limited to websites Can't scale down

8. Software as a Service vs Cloud Computing SaaS End user service Branded Billing per user Often Free Cloud Needs programmers Unbranded Billing by resource usage Pay to Play

9. Why Now? Cost of Storage : 1TB, 88 Euros Multi-core Chipsets/Multi-chip motherboards Cheap virtualisation software (Xen) Intel/Linux hegemony Broadband everywhere 10 years knowledge of building scalable software Excellent Open Source Software (LAMP, Rails, Django, Danga)

10. The Players Amazon Storage, Compute, Queuing, Entity Store, EBS, CDN Microsoft Storage, Compute, Queuing, Entity Store Google Storage, Compute (App Engine) GoGrid Storage, Compute Mosso Storage, Compute Nirvanix Storage

11. Example Costs Unlimited storage @ $0.15 per GB/month Linux/Windows Instance @ $0.10/$0.125 per hour 365 * 24 * 0.10 = $876 per year Watch the per transaction costs! SmugMug saved over 1m dollars in y1

12. The Problem Areas The Data Problem The Britney Spears Problem The Programmer Problem The Doctor Problem The End User Problem The Failure Problem

13. An Example Grid S3 1800 Euros a Month including 2TB of storage

14. Summary Its Cheap Its flexible Its not a silver bullet Its enabling a whole new class of business The game starts when Azure launches

15. Q&A