Getting optimal performance with AWS EBS Provisioned IOPS

The article reveals that EBS volume performance isn't solely dictated by volume type (like io1/io2) but is heavily influenced by burst balance and the underlying EBS infrastructure's shared nature. It demonstrates that even provisioned IOPS volumes can experience unpredictable latency spikes and lower-than-expected IOPS if they consistently exhaust their burst credits or hit shared resource contention. Therefore, thorough performance testing and monitoring, beyond just choosing the "fastest" volume type, are crucial for reliable EBS performance.