The Domain Name System was created so humans can remember names instead of numeric IPs. Public services rely on DNS because users need readable URLs and because a name can point to a new address without breaking clients. The article accepts this use case but questions whether the same mechanism belongs in internal IT stacks, whether on‑prem or cloud, and reduces operational overhead.

Internal reliance on DNS adds a failure point. Each extra service introduces latency, circular dependencies and cache‑TTL quirks that can stall server‑to‑server communication. High‑profile incidents, such as the Meta outage that locked employees out of physical spaces, illustrate how DNS failures amplify impact. Operators can instead embed IPs via automation tools or populate /etc/hosts to avoid resolution steps, or static entries in configuration management.

Beyond reliability, DNS traffic remains largely unencrypted, exposing internal networks to spoofing or data exfiltration. Deploying DNSSEC mitigates spoofing but adds configuration complexity and its own failure risk. Blocking outbound DNS queries or routing them through a vetted proxy can curb exfiltration vectors. The piece concludes that dropping DNS from internal fabric can boost robustness for most enterprises seeking zero‑trust posture.