ITAM can also be called Information Technology Asset Management, the set of SAM and HAM. SAM is software lifecycle management and HAM is lifecycle hardware management. Within ITAM, HAM is overlapping with SAM. You normally cannot do SAM properly unless you are also doing HAM.

A mature IT Asset Management (ITAM) program is critical for any organization. ITAM provides the visibility you need across your entire IT asset estate — bringing it all together for more confident decision-making to reduce costs and risks.

Software as a service (or SaaS) is a way of delivering applications over the Internet—as a service. Instead of installing and maintaining software, you simply access it over the Internet, freeing yourself from complex software and hardware management. SaaS applications are sometimes called web-based software, on-demand software, or hosted software. Whatever you call them, SaaS applications run on a SaaS provider’s servers. The provider manages access to the application, including security, availability, and performance.