In an ever-evolving digital landscape, the significance of robust cybersecurity measures continues to grow. This paper explores the efficacy of fortifying organizational defenses through the adoption of open-source Security Information and Event Management (SIEM) solutions. Through a comprehensive analysis, it is revealed that Wazuh emerges as the optimal choice due to its notable attributes including reliability, cost-effectiveness, high endpoint availability, robust file monitoring capabilities, intrusion detection prowess, and scalability. These findings offer valuable insights for organizations seeking to bolster their cybersecurity infrastructure, empowering them to make informed decisions regarding the integration of Wazuh into their security frameworks.