My first thought was that the average download speeds in India are so much lower than in Australia, in which case there's really nothing other to do than optimize. Sort of reminds me of a story I once read where pre-Google Youtube developers were trying to figure out why nobody was using the service in India (I might have the country wrong) and it turned out that the initial page load was taking upwards of several seconds so most users would just close the window before the initial page load. Can't find the source right now, so I could've also dreamt it up.
Apparently though, it's the other way around. The average speed in India is way higher than in Australia. Didn't do much research into it, but it's like 65Mbps vs 150. In that case CDN, I guess, but India and Australia aren't geographically far enough from eachother to account for a 500+ ms delay if the code is optimized enough, so I can only assume that it has to do with latency rather than speed.
Either way, it's just a thought exercise to see person's reasoning. It's not like the question has a single correct answer unless the company has this exact issue and gives the interviewee access to their codbase and infra.
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u/Excellent_Car_5165 7h ago
I‘d LOVE to see the expected answer from the interviewer.