Qualys operates a cloud-based security and compliance platform that provides organizations with visibility and assessment capabilities across their IT infrastructure. Founded in 1999 as one of the first SaaS security companies, the company delivers its services through the Enterprise TruRisk Platform, which integrates multiple security applications.

The platform includes applications for asset management, vulnerability detection and response, threat protection, patch management, endpoint detection and response, policy compliance, and security configuration assessment. Additional capabilities cover certificate management, file integrity monitoring, cloud security assessment, container security, and web application scanning and firewall protection. The company also offers PCI compliance scanning services.

Qualys serves over 10,000 subscription customers across more than 130 countries, spanning various industries including retail, technology, telecommunications, healthcare, and financial services. The company maintains strategic partnerships with major cloud providers such as Amazon Web Services, Microsoft Azure, and Google Cloud Platform, as well as managed service providers and consulting organizations.

The platform operates on a subscription model with packages tailored for small businesses, mid-sized businesses, enterprises, and consultants/auditors. Qualys provides both public and private cloud deployment options. The company is publicly traded and was a founding member of the Cloud Security Alliance.