Post-Merger Integration (PMI)
Post-Merger Integration covers all consolidation activities after deal close: financial systems, technology stacks, sales motions, customer success, HR/HRIS, compensation, governance, and brand. Most M&A deals in the tech middle market under-invest in PMI by 30–50%, which produces predictable retention misses (customer below 90%, staff below 80%) and EBITDA miss against thesis. The Human Renaissance integration playbook holds 95% post-merger customer retention and 100% staff retention 9 months post-close on complex divestitures — the difference is governance discipline, not headcount.
The 100-Day Integration Velocity Score quantifies how fast an integration is moving across six dimensions (consolidated billing, single SSO, merged engineering on-call, combined CRM, unified incident response, shared compensation) against an anonymized cohort benchmark. Score above 75 at day 60 correlates with 95%+ customer retention at day 180. Below 50 is an early-warning that the IMO needs leadership replacement or interim capacity injected.
Methodology: see The 100-Day Integration Velocity Score. The aggregated cohort dataset publishes quarterly inside The Tech Middle-Market Turnaround Index.
Related terms
- EBITDA — Earnings Before Interest, Taxes, Depreciation, and Amortization. The proxy for operating cash flow that PE buyers use to set valuation multiples.
- Net Revenue Retention (NRR) — The percentage of recurring revenue retained from existing customers a year later, including expansion, after subtracting churn and contraction. The single most-watched B2B SaaS valuation metric.
Where this gets applied
- Exit Readiness — Pre-LOI cleanup. Financial reporting normalization, contract hygiene, IP assignment review, customer-concentration mitigation.
- Migration & Integration — Post-merger integrations that hold customer and staff retention. 95% / 100% achieved on complex divestitures.