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.

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.

Don't surprise an acquired company with an integration plan on day one. Snowflake turns diligence into a collaborative process post-term sheet. They work with the target's leadership to jointly build the integration thesis, define milestones, and agree on charters, ensuring buy-in and alignment before the deal is even signed.

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.

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.

Palo Alto Networks dedicates the majority of its M&A diligence to co-developing a multi-year product roadmap with the target's team. This ensures full strategic alignment before the deal is signed, avoiding the common failure mode where product visions clash after the acquisition is complete.

Corporate Development facilitates M&A but should not be the "sponsor." The true sponsor is the internal leader from product or engineering who will own the acquisition's success post-close. This distinction ensures clear accountability and prevents deals that lack a dedicated internal champion.

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.