cosmotic parent
Amazon's own chips are ARM. ARM requires somewhat specialized builds of software that are likely different than development instances, CI/CD, and/or local dev machines. It's not insurmountable but does certainly complicate usage.
Your local dev machines might be Macs though, in which case it might be easier for you to go with ARM servers than x86.
They might be. My local dev machine is a Mac. I've found Intel or Intel+ARM container images; never an ARM only. Again, not insurmountable but certainly more resistance than the straight intel route.