[nijave]

I've heard of some latency issues with gp3 vs gp2--not sure if that's been resolved. Of course, services like RDS don't support it yet, either (same with io2)

As for cost consumption, splitting services into separate AWS accounts (even per-environment) helps if they're large (plus then you're less likely to hit rate limits, worry about IAM segregation, etc)

[Pokepokalypse]

I just did a mass conversion of gp2 to gp3. gp3 DOES increase disk latency, but we're talking 2ms -> 4ms. So it's doubled, but still pretty low. For normal usage, it's still quite fast.