Zack Rosen of Chapter 3 talks about Cloud hosting for Drupal with Amazon EC2 as well as:

• the three Get Pantheon Amazon EC2 machine instances including:
• Mercury performance optimized server configurations using Pressflow Drupal
• Vulcan Amazon EC2 machine instance for Continuous Integration using the Hudson Continuous Testing/Integration system
• Aegir Amazon EC2 machine instance

for rapidly deploying multiple Drupal sites using the Aegir hosting system

• Main differences between Amazon EC2 and other hosting options
• Chapter 3's motivations for releasing these projects
• Drawbacks to Cloud hosting

For more information:

• Amazon Web Services (S3, EC2) group on g.d.o
• Get Pantheon

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