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

Personal computing Office applications Databases and storage Math and science Web browser

Cloud accessed through the browser Office applications Math and science Web browser Databases and storage

… with the cloud provider’s domain name …

… or with your own

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

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

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

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

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

Slide courtesy of Werner Vogels