Overview of the solution -- summary of how it meets the requirements
In solving this problem, what do we hope to achieve? -- what good things will happen if we succeed?
What challenges do we need to meet to solve the problem? -- enumerate them
Building Clouds using Commodity, Open-Source Software Components Rich Wolski Chris Grzegorczyk, Dan Nurmi, Graziano Obertelli, Woody Rollins, Sunil Soman, Lamia Youseff, Dmitrii Zagorodnov Computer Science Department University of California, Santa Barbara