Acquisition integration strategy: 90-day implementation playbook

Executive summary

A method for executing the first 90 days of an acquisition integration so value is protected before it is captured.

What is inside

What the 90-day playbook covers

The asset walks an IMO lead through three 30-day blocks: launch, hold and action, and stabilize. It covers workstreams and owners, the milestone plan, the IMO rhythm, the action log, escalation rules, and the checkpoint scorecard, with a worked synthetic case through day 90.

Turning an approved integration design and roadmap into executable work after close
What must be live on Day 1 and what must not change
Holding exposed customers and key people through the first quarter
Actioning the first synergies against frozen baselines
The weekly rhythm of the integration management office
An action log and escalation rules that keep issues moving
Checkpoints at day 30, 60, and 90 that prepare the first funding gate

How to use it

How teams use it

Teams use it from close. The IMO lead runs it, workstream leads report weekly, and the sponsor reviews the checkpoint scorecard at days 30, 60, and 90. Communities of practice rehearse Day 1 and the first 30 days in an implementation workshop before close.

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Stratenity Advisory Team. (2026). Acquisition integration strategy: 90-day implementation playbook. Stratenity Library. https://www.stratenity.com/resources/library/playbooks/acquisition-integration-strategy-90-day-implementation-playbook

Stratenity Advisory Team. "Acquisition integration strategy: 90-day implementation playbook." Stratenity Library, 2026, www.stratenity.com/resources/library/playbooks/acquisition-integration-strategy-90-day-implementation-playbook.

Stratenity Advisory Team. "Acquisition integration strategy: 90-day implementation playbook." Stratenity Library, 2026. https://www.stratenity.com/resources/library/playbooks/acquisition-integration-strategy-90-day-implementation-playbook.

Stratenity Advisory Team (2026) Acquisition integration strategy: 90-day implementation playbook. Stratenity Library. Available at: https://www.stratenity.com/resources/library/playbooks/acquisition-integration-strategy-90-day-implementation-playbook (Accessed: the date of access).

@misc{stratenity_stxa0077, author = {{Stratenity Advisory Team}}, title = {Acquisition integration strategy: 90-day implementation playbook}, year = {2026}, publisher = {Stratenity Library}, howpublished = {\url{https://www.stratenity.com/resources/library/playbooks/acquisition-integration-strategy-90-day-implementation-playbook}}, note = {Asset ID STX-A0077} }

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Acquisition integration strategy: 90-day implementation playbook

What the 90-day playbook covers

This is a taste. The full library goes deeper.

Stratenity is the AI Operating System for Strategic Execution™.

Stratenity is the AI Operating System for Strategic Execution^™.