Don't just hand an integration plan to functional leaders post-close. Involve them early in the process as co-architects. Their input is crucial for validating financial models and strategic assumptions, ensuring realistic expectations and fostering ownership of the deal's success.

Contrary to standard M&A practice where integration begins post-close, Brad Jacobs makes immediate, unrestricted access to a target company's employees and operations a non-negotiable term upon signing. This allows his team to begin the integration process weeks or months earlier.

Combining strategy, M&A, and integration under a single leader provides a full lifecycle, enterprise-wide view. This structure breaks down silos and creates a "closed-loop system" where post-deal integration performance and lessons learned directly feed back into future strategy and deal theses, refining success metrics beyond financials.

To avoid a broken handoff, embed key business and integration experts into the core deal team from the start. These members view diligence through an integration lens, validating synergy assumptions and timelines in real-time. This prevents post-signing surprises and ensures the deal model is operationally achievable, creating a seamless transition from deal-making to execution.

The biggest risk after closing a deal is losing momentum. To ensure success, Snowflake assigns a 'Directly Responsible Individual' (DRI) for integration. This person leads reviews at 30, 60, 90, and 180 days post-close to hold everyone accountable to the integration plan and original thesis.

To combat decision paralysis during integration, implement a regimented playbook with RASI charts (Responsible, Accountable, Consulted, Informed). Critically, decisions are time-bound with clear milestones. If a decision isn't made within the specified timeframe, it is automatically escalated, forcing resolution and maintaining momentum.

In the final deal approval meeting, require every functional lead (HR, finance, sales, etc.) to present their findings and cast an explicit go/no-go vote. This forces accountability and surfaces last-minute objections, preventing passive dissent where a stakeholder might later claim they were unheard, thus undermining integration.

A separate Integration Management Office (IMO) creates a risky handoff. A better model for agile teams is for the Corp Dev professional who sourced and led the deal to pivot and own the integration plan post-close. This ensures the original deal thesis is carried through execution without loss of context.

To prevent knowledge gaps between deal execution and integration, IFS makes the same internal expert responsible for a specific workstream (e.g., product, GTM) during commercial diligence and the subsequent integration phase, creating end-to-end accountability.