M&A Science

How Integration Debt, Cultural Friction, and Communication Failures Kill M&A Deals

Jan 12, 2026
Donara Jaghinyan, a transformation and integration leader, discusses the complexities of post-merger integration. She dives into 'integration debt' and how neglected tasks can hinder success. Featuring practical change management strategies, she emphasizes clear communication to alleviate employee uncertainty. Donara also shares her experiences with cultural challenges in cross-border deals, including navigating gender dynamics and building trust across diverse regions. Her insights reveal the operational realities that can make or break an M&A deal.
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INSIGHT

Track Integration Debt Proactively

  • Integration debt is the backlog of long-tail items left after initial integration windows close.
  • Tracking owners, timelines, and dependencies prevents those items from getting forgotten months later.
ADVICE

Use Change Management As The Experience Layer

  • Use change management as the experience layer that sits on top of integration.
  • Assess gaps, roles, and readiness before changing processes to improve adoption.
INSIGHT

Make Culture A Strategic Choice

  • Culture should be treated as strategy, not a scapegoat or an afterthought.
  • Tailor integration approaches by team instead of enforcing a one-size-fits-all cultural fix.
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