The Three Ways to Cloud Compute
This cloud computing video explains SaaS, PaaS and Iaas — otherwise known as "software as a service", "platform as a service" and "infrastructure as a service". It is produced and presented by Christopher Barnatt, author of ExplainingComputers.com and "A Brief Guide to Cloud Computing" (Robinson, 2010), and Associate Professor of Computing & Future Studies in Nottingham University Business School. For more information on cloud computing please see ExplainingComputers.com/cloud You can now download the first 34 pages of my book as a free sampler via tinyurl.com (34Mb pdf).
Source: The Three Ways to Cloud Compute (Youtube).