Summary (Less technical)
We made a necessary update/upgrade to the hosting services, and a quirky setting meant that while the code was up and fine, the domains (vlge.io) were not able to reach it. It appeared "down" but was simply not accessible at the normal location (which has the same effect)

More Details (Technical):
App Runner → ECS

We migrated production from AWS App Runner to ECS Express Mode on Fargate. AWS is winding down App Runner for new customers, and ECS gives us mor...