Modules are the children, or the second tier navigation options to the applications in the application navigator. Modules often link to other pages or records in the platform. You can configure which modules appear in the application navigator using Application Menus module.
What are the in demand modules in ServiceNow?
what are the modules in servicenow on high demand at present? GRC(Governance, Risk and Complaince) is considered to be most demanded in the Job Market now. This is followed by HR Service Delivery which is gaining momentum in the industry now a days. But ITSM is evergreen and popular always.