The document discusses the relationship between customer success and marketing. It suggests that customer success and marketing should work together collaboratively by openly communicating, embracing each other's roles, and using shared metrics. Specifically, it recommends the "play" of customer nurturing, where customer success and marketing cooperatively create and execute automated email campaigns to educate customers at different points in the lifecycle such as onboarding, renewals, and increasing product adoption. This can help increase customer satisfaction, scale, and advocacy.