The Qualys Cloud Platform, also known as QualysGuard, consists of an integrated suite of solutions to help organizations simplify security operations and lower the cost of compliance by delivering critical security intelligence on demand and automating the full spectrum of auditing, compliance and protection for IT systems and web applications. Delivered via a multi-tenant shared cloud service or private cloud, the Qualys Cloud Platform or QualysGuard is the first security platform that provides you with continuous security and allows you to monitor, detect and protect your global network – from the perimeter to the core.

Source: https://www.gsa.gov/portal/mediaId/131294/fileName/GSA_CDM_ProductGuide_2016-03-11d.action