1. Cloud Computing Ed Lazowska Bill & Melinda Gates Chair in Computer Science & Engineering University of Washington

2. Personal computing Office applications Databases and storage Email Math and science Web browser

3. Cloud email accessed through the browser Office applications Email Math and science Web browser Email Databases and storage

4. … with the cloud provider’s domain name …

5. … or with your own

6. Why not office applications too? Email Math and science Email Office applications Databases and storage Web browser

8. Why not everything else? Email Web browser Databases and storage Math and science Office applications

10. Consider … z Sharing is easy z Someone else does backup z Someone else handles software updates z There’s 7x24x365 operations support, auxiliary power, redundant network connections, geographical diversity z Scalability – both up and down – is instantaneous z Many fewer demands on the local operating system and machine

11. Amazon Elastic Compute Cloud (EC2) z $0.80 per hour for y 8 cores of 3 GHz 64-bit Intel or AMD y 7 GB memory y 1.69 TB scratch storage z Need it 24x7 for a year? y $4800 z $0.10 per hour for y 1 core of 1.2 GHz 32-bit Intel or AMD (1/20 th the above) y 1.7 GB memory y 160 GB scratch storage z Need it 24x7 for a year? y $590

12. z This includes y Purchase + replacement y Housing y Power y Operation y Reliability y Security y Instantaneous expansion and contraction

13. Slide courtesy of Werner Vogels