we just ran some extensive testing to move a highly trafficked website from a cluster of dedicated servers (at theplanet) to ec2. note that our application is

we just ran some extensive testing to move a highly trafficked website from a cluster of dedicated servers (at theplanet) to ec2. note that our application is to use ec2 as a real-time web server. the bottom line: dedicated servers allow for much faster ip takeover (critical for high-availability) and had lower latency. ec2 rocks for scalability. in the end we decided to hold off on ec2 until they address these 2 deficiencies.