... Naturally, Google isn't the first to offer this sort of cloud computing platform. Amazon.com offers the Amazon Web Services, including its Elastic Computing Cloud (for processing power), Simple Storage Service (for storage), and SimpleDB (for database queries), while Salesforce.com serves up Appexchange. The difference is that the Google App Engine is free - at least in part. App Engine is available today as a free "preview release," and with this release, applications are limited to 500MB of storage, 200M megacycles of CPU per day, and 10GB bandwidth per day. But somewhere down the road, Google will hawk more storage, more cycles, and more bandwidth at some unknown price. ""We expect most applications will be able to serve around 5 million pageviews per month," McDonald said, referring to the preview release. "In the future, these limited quotas will remain free, and developers will be able to purchase additional resources as needed." ... http://www.regdeveloper.co.uk/2008/04/08/google_unveils_app_engine/ -- http://karounos.gr/blog/