| A release breaks something | Host and MES software touches every lot on the floor; a bad release can halt or misroute work in progress | Regression and acceptance testing, run per build rather than per milestone |
| An interface drifts from spec | Equipment stops reporting correctly and data quality degrades quietly, long before anyone notices | SEMI conformance testing against host and equipment simulators |
| A migration loses data | Cutover is the highest-risk night in a plant's software life, and it is rarely rehearsed | Migration testing: reconciliation, parallel run, cutover rehearsal |
| Failover has never been tried | A recovery plan that has not been exercised is an assumption, and the audit will ask | Disaster recovery testing, RTO and RPO verification, runbook validation |
| An alert goes unwatched | Small anomalies become excursions; excursions become scrapped lots and lost weeks | 24×7 monitored operations, playbook triage, 30-minute critical response |
| A safety or environmental incident | One event can stop a line, trigger an investigation and put a permit in question | Incident, hazard and EHS management platforms, deployed and run |
| A contractor event during build | Thousands of contractors on a live site are the highest-risk population on the property | Contractor and workforce compliance systems |
| A supplier fails | Most of the footprint, and much of the operational risk, sits upstream rather than inside the fence | Third-party and supply chain risk management |
| An audit or qualification fails | Automotive and aerospace customers audit hard; losing qualification loses the account, not just the order | Policy, controls, internal audit and audit-ready evidence |
| A disclosure obligation is missed | Sustainability reporting has moved from annual report to procurement condition | CSRD and sustainability reporting platforms |
| The continuity plan is a document | Business continuity only exists if it has been tested against something real | Business continuity management, and the testing that proves it |