Crestline Health Technologies · FDA-regulated SaaS Platform · 180-person Engineering Org
Target: Reduce escape rate to <1.5% by Q3 end · Zero Sev-1 escapes on payment processing
Ratio of production-discovered defects to total defects (pre-prod + prod). Target: <1.5%
Per 1,000 lines of code · New vs Regression defects
Rolling 4-week · Sev-1/2 as % of total
Integration test coverage on changed files · v4.9 shows 3-day QA window compression impact
Defects caught by automated regression vs total pre-prod defects
Reopened after initial closure · Indicates fix quality
Configuration drift detection across 12 subsystems · Score = % exact matches
| Subsystem | Parity Score | Drift Items | Top Discrepancy | Status |
|---|---|---|---|---|
| Payment Gateway | 72.3% | 8 | TLS 1.2 vs 1.3 | Critical |
| Auth & Sessions | 98.1% | 1 | Token expiry: 60m vs 90m | OK |
| Data Export Engine | 84.2% | 5 | FHIR endpoint version | Warning |
| Notification Service | 96.7% | 2 | Rate limit: 500 vs 1000/min | OK |
| Database Cluster | 99.4% | 1 | Query cache size | OK |
| CDN & Static Assets | 100% | 0 | — | OK |
| Observability Stack | 87.9% | 4 | Trace sampling rate | Warning |
| Feature Flags | 94.2% | 3 | Rollout %: 10% vs 25% | OK |
Production defects escalated via support tickets · 30-day rolling average by release cohort
v4.9 post-sprint lock changes
by Severity (hours)
by root cause category