What's hacked together about using NLBs and EC2 instances with statically launched Docker instances on each EC2 instance driven by Terraform and Cloudformation? That's all pretty standard AWS stuff. I'd guess from having run that sort of infrastructure in the past they have less custom tooling than the average K8s shop. It's certainly easier to understand the failure modes.
Plus this doesn't look like a heavy microservice environment. With a monolith or small number of services that aren't changing often with dedicated LBs and autoscale groups I'm guessing their environment is fairly easy to monitor and manage.
Plus this doesn't look like a heavy microservice environment. With a monolith or small number of services that aren't changing often with dedicated LBs and autoscale groups I'm guessing their environment is fairly easy to monitor and manage.