The document discusses the transformative potential of big data in anesthesiology, highlighting how electronic healthcare records enable improved patient care and clinical decision-making. It reviews current major anesthesia registries such as the Multicenter Perioperative Outcomes Group (MPOG) and the National Anesthesia Clinical Outcomes Registry (NACOR), emphasizing their roles in research and quality improvement. Additionally, it touches on disruptive changes in anesthesia practices, particularly within ambulatory surgical centers, driven by cost sensitivity and technological innovations.