Change Validation as a Product
Most outages are change-related. Treat validation like a product: standard checks, automation, and fast feedback loops.
In infrastructure, most “mystery outages” are not mysteries — they’re change failures without reliable validation.
The fix is to treat validation like a product with owners, standards, and continuous improvement.
What validation needs to cover
Good validation focuses on:
- control plane health (adjacencies, routing intent),
- data plane reachability (critical paths),
- security enforcement (policy and segmentation),
- application dependencies (DNS, certificates, endpoints),
- performance regression (latency, drops, saturation).
Pre-checks and post-checks should be fast
If checks take hours, teams will skip them.
Target:
- pre-check: minutes,
- post-check: minutes,
- rollback decision: clear criteria.
Standardize the 80%
Create templates for common changes:
- WAN edge changes,
- firewall policy updates,
- load balancer / WAF changes,
- DC fabric maintenance windows,
- cloud route table / security group updates.
Templates reduce variance and make outcomes predictable.
Automate first, then get fancy
Before AI, you need deterministic automation:
- collect state,
- run tests,
- compare baselines,
- produce a human-readable report.
AI becomes useful once the system is disciplined — summarization, correlation, and guided runbook steps.
Closing thought
When validation is standardized and automated, teams move faster with less fear. The goal is not “perfect safety.” The goal is fast feedback and controlled risk.