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Practical takes on post-merger integration; what works, what doesn't, and what we've learned from operators in the field.

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Post-Acquisition Change Management: Why People Integration Derails More Deals Than Systems
12 min

Post-Acquisition Change Management: Why People Integration Derails More Deals Than Systems

Post-acquisition change management is where M&A deals deliver value or quietly fail. Learn how to manage acquired staff, reduce attrition, and drive adoption.
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Post-Merger HR System Integration: A Survival Guide for Serial Acquirers
12 min

Post-Merger HR System Integration: A Survival Guide for Serial Acquirers

Post-merger HR system integration guide for roll-ups: payroll consolidation risks, TUPE compliance, sequencing strategies, and avoiding the chaos that drives talent exits.
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Acquired Company Onboarding Process: How to Integrate Employees Without Losing Them
Integration Strategy & Planning
17 min

Acquired Company Onboarding Process: How to Integrate Employees Without Losing Them

Discover why 47% of acquired employees leave within a year and how to fix it. Practical merger onboarding checklist, 90-day timeline, and proven strategies to retain talent post-acquisition.
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Software Licence Audit After Acquisition
13 min

Software Licence Audit After Acquisition

Software licence audit after acquisition: uncover 20-35% overspend on duplicate SaaS, CRM, and redundant tools. A 90-day framework to capture savings fast.
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Buy and Build Integration Strategy: The Execution Framework for Serial Acquirers
9 min

Buy and Build Integration Strategy: The Execution Framework for Serial Acquirers

Buy-and-build integration strategy fails when acquisition pace outstrips execution. Discover the repeatable playbook PE-backed platforms use to integrate faster, capture synergies, and hit sponsor IRR targets.
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Sage to Xero Migration Guide for Post-Acquisition Consolidation
System Migration
15 min

Sage to Xero Migration Guide for Post-Acquisition Consolidation

Sage to Xero migration guide for UK acquirers: chart of accounts mapping, historical data strategy, parallel running, and post-acquisition timing decisions.
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How Long Does Post-Merger Integration Take?
Integration Strategy & Planning
11 min

How Long Does Post-Merger Integration Take?

Post-merger integration takes 12–18 months for mid-market deals, but timelines vary by complexity and approach. Learn what drives integration duration and how to compress it.
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Post-Acquisition Cost Savings: The Operator's Guide to M&A Synergy Realisation
14 min

Post-Acquisition Cost Savings: The Operator's Guide to M&A Synergy Realisation

Discover how CFOs in roll-ups unlock £150-300k in post-acquisition cost savings through subscription consolidation, vendor rationalisation, and structured synergy execution.
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Post-Merger Integration Risks: Where Serial Acquirers Lose Value and How to Avoid It
Risk & Due Diligence
13 min

Post-Merger Integration Risks: Where Serial Acquirers Lose Value and How to Avoid It

Discover the 5 post-merger integration risks that cause 70-90% of M&A deals to fail—and the proven frameworks roll-up operators use to prevent value destruction.
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Shadow IT Discovery After Acquisition
Risk & Due Diligence
12 min

Shadow IT Discovery After Acquisition

Discover how to uncover hidden IT systems after acquisition. Practical framework for identifying shadow IT risks, costs, and dependencies in the first 90 days post-close.
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CRM Migration After Acquisition: A Practical Execution Guide for Roll-Up Operators
System Migration
17 min

CRM Migration After Acquisition: A Practical Execution Guide for Roll-Up Operators

CRM migration after acquisition: Avoid costly failures with proven strategies for data consolidation, deduplication, and user adoption across multiple platforms.
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ERP Consolidation After Merger: The Roll-Up Operator's Field Guide
System Migration
14 min

ERP Consolidation After Merger: The Roll-Up Operator's Field Guide

ERP consolidation after merger is the toughest post-acquisition challenge. Learn when to consolidate, how to sequence it, and the proven four-phase roadmap that works.
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Post-Acquisition IT Due Diligence Checklist
Risk & Due Diligence
15 min

Post-Acquisition IT Due Diligence Checklist

Post-acquisition IT due diligence checklist for mid-market roll-ups. Reduce integration costs by 15–25%, avoid hidden liabilities, and uncover tech debt before you sign.
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Data Migration After Acquisition: A Survival Guide for Serial Acquirers
Risk & Due Diligence
13 min

Data Migration After Acquisition: A Survival Guide for Serial Acquirers

Data migration after acquisition derails 83% of M&A projects. Learn the 5-stage framework roll-ups use to consolidate data, avoid hidden costs, and unlock synergies faster.
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Post-Merger Integration Challenges: Where Most Roll-Up Operators Lose Value
Risk & Due Diligence
11 min

Post-Merger Integration Challenges: Where Most Roll-Up Operators Lose Value

Discover why 70-90% of M&A deals fail due to post-merger integration challenges—from IT traps to cultural resistance—and how to prevent predictable value erosion.
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Post-Acquisition System Migration: A Practical IT PMI Guide
System Migration
12 min

Post-Acquisition System Migration Guide: A Practical IT PMI Playbook

A practical guide to post-acquisition system migration for roll-ups. What to migrate first, how to avoid common failures, and how to keep the business running.
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Should You Hire a PMI Consultant After an Acquisition?
Integration Strategy & Planning
7 MIN

Should You Hire a PMI Consultant After an Acquisition?

PMI consultants help with strategy, systems, and change management after acquisitions. Here’s what they actually do and how to decide if you need one.
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50+ Post-Merger Integration Statistics (2026)
18 min

50+ Post-Merger Integration Statistics: What the Data Really Says

83% of deals fail to boost shareholder returns. We compiled 50+ statistics on why integrations fail, what successful acquirers do differently, and where deal value actually gets created or destroyed.
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Post-Merger Integration Checklists and Templates | PMI Stack
Tools & Resources
15 min

Post-Merger Integration Checklists and Templates

Only 40% of acquirers use structured playbooks. Here are the checklists, templates, and frameworks that improve your odds.
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Why Systems Don't Fail — Adoption Fails | PMI Stack
9 min

Why Systems Don't Fail, Adoption Fails

67% of delayed synergies are due to people issues, not technical problems. Here's how to make adoption stick.
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System Migration After Acquisition | PMI Stack
System Migration
11 min

System Migration After Acquisition: CRM, ERP, Email, HR, and Operational Tools

83% of data migrations fail or exceed budget. Here are the non-obvious lessons for migrating CRM, ERP, email, and HR systems.
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The First 100 Days After an Acquisition | PMI Stack
Integration Strategy & Planning
12 min

The First 100 Days After an Acquisition: A Phase-by-Phase Timeline

92% of integrations succeed when synergies are tracked from day one. Here's your phase-by-phase execution timeline.
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The Post-Acquisition Integration Audit | PMI Stack
Risk & Due Diligence
10 min

The Post-Acquisition Integration Audit: What to Do Before You Touch Anything

42% of due diligence fails to identify synergies. Here's the discovery process that makes everything else possible.
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Who Should Handle Post-Merger Integration? | PMI Stack
Integration Strategy & Planning
8 min

In-House, Contractors, or Partners: Who Should Handle Post-Merger Integration?

Should you handle integration in-house, hire contractors, or bring in consultants? Here's how to match your resourcing to your situation.
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Deciding the Right Integration Level for Acquisitions | PMI Stack
Integration Strategy & Planning
10 min

How to Decide the Right Integration Level for Each Acquisition

Not every acquisition needs full integration. Use this High/Medium/Low-Touch framework to match integration depth to strategic intent.
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Technical Integration Is the Hidden M&A Value Driver | PMI Stack
Integration Strategy & Planning
8 min

Why Technical Integration Is the Hidden Value Driver in M&A

70-90% of M&A deals fail to deliver expected value. Learn why technical integration is the hidden culprit and the five failure patterns to avoid.
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