Final answer:
SCAP-aware scanners like Tenable's Nessus are utilized for compliance scanning, ensuring systems meet security standards based on best practice baselines from entities such as the Centre for Internet Security.
Step-by-step explanation:
The Security Content Automation Protocol (SCAP) aware scanners, such as Tenable's Nessus, are most helpful for compliance scanning. Compliance scans assess the implementation of security configuration baselines, which are established by authorities like the Centre for Internet Security (CIS), against a known set of best practices. These scans help organizations ensure that their systems meet specific security standards and are configured properly to protect against potential vulnerabilities. By leveraging these baselines, organizations can effectively measure their security posture and identify areas where improvements are needed.