3 ms·

But you don't need to enable cross-AZ traffic. Or to be precise you can disable it (if you give up on some features like stickiness).

• dilyevsky 4y ago
  Only helps if your instances don’t need to talk to each other
  • rescbr 4y ago
    Instances can still do cross-AZ traffic, this just prevents the incoming load balanced traffic from crossing AZs.