Adobe Cms - What is the difference between headless CMS and AEM?

A headless content management system (CMS) that has been popular in the business sector is Adobe Experience Manager (AEM). A headless content management system (CMS) mainly functions by isolating the frontend and backend and supplying the frontend with material through an application programming interface (API). An API powers AEM's headless architecture. This makes it possible to use JSON to distribute material to different channels.