The mission of the Pediatric Acute Care Cardiology Collaborative is to improve cardiac acute care outcomes by focusing on quality, value, and experiences as appreciated by all stakeholders. Success will be measured by our ability to reduce acute care complications, adjusted hospital length of stay, and less than 7-day all-cause readmission rates, as well as improving patient, family, and staff experience. We will employ validated and sustainable quality improvement methods to achieve our aims. PAC³ will intentionally optimize partnerships and build alignment with other collaboratives, medical organizations, and parent-driven advocacy groups. Success will be realized by metrics derived from a validated, audited, and prospective data registry.