Most GTM systems focus on winning the deal. Almost nothing protects what happens after.
Sales makes a promise to get the signature. Delivery inherits that promise. In month two, they realize the timeline is impossible or the integration does not exist. By then, it is a client fire.
The usual fix is a mandatory handoff meeting.
That is throwing labor at a systems problem.
I built a post-sales validation layer to catch these before kickoff. When a deal closes, it takes what sales committed to and diffs it against a constraints file, the delivery team's actual envelope. Real timelines. Real volume ramps.
Clean deals clear automatically. Genuine over-commitments trigger an escalation to delivery with a suggested intervention.
The system does not decide what is deliverable. Operations defines the envelope once. The system enforces it on every deal.
A system that flags every ambitious deal gets ignored in a month. You only pull human attention to the deals that actually need it.
Curious how other teams handle this, does anything sit between closed-won and kickoff for you, or does delivery just inherit whatever was promised?