SIEM (Security Information and Event Management) and EDR (Endpoint Detection and Response) are both cybersecurity solutions, but they have different focuses. SIEM is designed to collect, analyze, normalize, and correlate security event data from multiple sources to provide a centralized view of an organization's security posture. On the other hand, EDR is specifically focused on detecting and responding to threats on endpoints, such as individual computers or servers. In short, SIEM is a broader, more holistic approach to security management, while EDR is a targeted solution for endpoint security.