Related: EC2, L3 Network
Enhanced networking uses Single Root IOV (SR-IOV) (4rd iteration)
- This feature is required for cluster placement groups for example.
- Allows more higher I/O & Low Host CPU usage, more bandwith
- Higher packets per second (PPS)
- Consistent low latency.
- Either enabled by default or allowed to be enabled on modern instance types
EBS Optimized - Dedicated capacity for EBS I/O traffic from other instance traffic, no contention.
- Supported enabled by default, no charge. On old instances can be turned on, paid.