Triage, originating in military medicine, has evolved into a critical element of modern healthcare, particularly in emergency and primary care. This chapter traces the historical development of triage from its Napoleonic origins under Baron Dominique-Jean Larrey to its current applications in contemporary healthcare. The core principles of triage—assessing urgency, allocating resources, and determining care pathways—have been adapted to both face-to-face and remote healthcare environments. The COVID-19 pandemic underscored the importance of remote triage, which has increasingly become an economic and ecological alternative to traditional consultations. This chapter highlights the role of triagists and the essential skills required for effective remote triage, including clinical judgment, communication, and decision-making. It also examines the efficacy of two widely used triage systems: the Emergency Severity Index (ESI) and the Manchester Triage System (MTS), offering insights into their performance and limitations. As healthcare systems worldwide grapple with resource constraints and workforce shortages, triage remains a crucial strategy for optimizing care delivery. Looking to the future, the integration of advanced technologies, such as Clinical Decision Support Systems (CDSS) and artificial intelligence-powered tools like ChatGPT, promises to enhance the accuracy and efficiency of triage, allowing for real-time connectivity and improved patient outcomes. This chapter concludes by emphasizing the need for healthcare professionals to adapt to these technological advancements while maintaining the foundational principles of triage, ensuring that patient care remains timely, effective, and compassionate.