May add them later if I need more than 1 region for staging.

Follow Terragrunt convention, and doesn't get ignored by search tools.

Prefix with _ to indicate that this folder doesn’t contain deployable
configurations, and so that it is lexically sorted first in the
directory listing.

Currently there's no region-specific logic, I might need that later but
for now keep things simple.

My laptop is pretty far away from the servers.

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