If I had an "important enough" client, I think I'd store all out local (Sydney + Melbourne AWS cross region) data to AWS Singapore (to protect against Australian jurisdictional and political risks) and to a non AWS cloud provider in the EU somewhere. I reckon thatd be close to as resilient a pile of hard drives in an underground bunker, for significantly less setup and ongoing cost, while also being much more available when needed. (Can you imagine the queue at the underground bunker when multiple AWS regions get bombed? Or even imagine getting to the bunker in "a friendly jurisdiction" while a shooting war is taking place?)
We haven't worked out a decent solution to Visa and Mastercard payment network going down for more than a couple of cloud billing cycles though.
We've beer-o-clock wargamed this a bit.
If I had an "important enough" client, I think I'd store all out local (Sydney + Melbourne AWS cross region) data to AWS Singapore (to protect against Australian jurisdictional and political risks) and to a non AWS cloud provider in the EU somewhere. I reckon thatd be close to as resilient a pile of hard drives in an underground bunker, for significantly less setup and ongoing cost, while also being much more available when needed. (Can you imagine the queue at the underground bunker when multiple AWS regions get bombed? Or even imagine getting to the bunker in "a friendly jurisdiction" while a shooting war is taking place?)
We haven't worked out a decent solution to Visa and Mastercard payment network going down for more than a couple of cloud billing cycles though.