Tenable.io is a cloud-based vulnerability management platform designed to help organizations identify and manage security risks in their IT environments. It provides tools for continuous monitoring, assessment, and reporting of vulnerabilities across various assets, including servers, applications, and cloud services. The platform uses a comprehensive approach to prioritize vulnerabilities based on their potential impact, allowing security teams to focus on the most critical issues. With features like real-time dashboards and integration with other security tools, Tenable.io aims to enhance an organization's overall security posture and reduce the likelihood of cyber threats.