2 ms·On the Amazon forums, people wrote about 10MB/s throughput between S3 and EC2.by cpinto 19y agoOn the Amazon forums, people wrote about 10MB/s throughput between S3 and EC2.ntoshev 19y ago...and 200ms lag.steve 19y ago...still sounds great for my app, actually. My crazy caching design shows it's benefits after all!