Renewals, expansions, and customer health are connected to the same system as sales, so nothing slips between handoff and renewal.
The handoff from sales to customer success is where revenue leaks. The context built up through the deal, what was sold, what was promised, and what the customer cares about rarely makes it to the team responsible for keeping them. Renewals miss, expansions go untriggered, and churn goes undetected until it's too late.