The National Library of Medicine (NLM) is a leader in biomedical informatics and computational health data science research, and the world’s largest biomedical library. We lead innovation in the development of advanced tools for clinical data interpretation and decision-making through our cutting-edge research, training programs, and information services. We are distinctive within the National Institutes of Health (NIH) because of our substantial investment in sustainable biomedical information systems that make scientific literature, genomic, clinical, and other types of biomedical data readily available to those who need it. NLM plays a vital role in biomedical discovery and the translation of biomedical research into practice. We build and employ powerful, sophisticated tools to collect, organize, search, and disseminate data that enable innovation to power new kinds of discovery. We are a library for the world, and our work forms the backbone of scientific communication. We make information and knowledge flow—ensuring that scientists, policymakers, clinicians, patients, and the public have access to biomedical information 24 hours a day, 7 days a week.