# The Friday Deploy That Broke Checkout: A Regression Testing
Marcus, a lead engineer at a small payments startup, still remembers the exact Slack message that ended his weekend: #alerts 18:12 Checkout conversion: 0.0% (baseline: 3.8%) #alerts 18:13 Revenue/min: $0 (baseline: $410) #support 18:15 "Your pay button does nothing??" The release that went out at 1…
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- 2026-11-12 23:14 · DEV Community — AI
# The Friday Deploy That Broke Checkout: A Regression Testing