I have a .com domain with 'test' in the name. I was mildly DNS spammed because Microsoft admins would create that thing with test in the name. I'd get 10-20 DNS packets a day. I moved it to an external DNS provider just to give my logs a break.
20 packets a day? Phew! So you barely survived the DDoS!
Well, you also have to run the Kubernetes cluster, ELK stack, Postgres, Redis, Kafka, Prometheus, Grafana and Jaeger to monitor the application and scale elastically between 0 and 20 packets.
Maybe they’re running their DNS server on a solar-powered Arduino.
At least you’re not a sysadmin for Contoso, those folks must have their hands full.