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Glossary

• Stage 1 (Raw): initial ingested payroll snapshot data.
• Stage 2 (Normalize): canonicalized records and standardized fields for downstream use.
• Stage 3 (Absorb): business-rule application layer used for reporting and commissions.
• Cadence: pay-frequency pattern used to infer period logic and calculations.
• PEPM: per-employee-per-month basis used in selected rollup logic.
• TPA: third-party adjustment logic applied in specific commission paths.
• Readiness gate: pre-release checks that must pass before deploy/cutover.
• Shadow mode: run production-like computations in parallel to verify parity before full cutover.
• Parity check: comparison proving outputs match expected baselines between systems or periods.
• Forensics: root-cause investigation artifacts used to explain data or metric anomalies.