AEM encompasses several applications that are designed to interact and complement each other. In particular, the Workflow engine can be used in tight conjunction with several of the other applications.
For example, a key application of AEM is Web Content Management (WCM), which enables you to generate and publish pages to your website. This functionality is often subject to organizational processes, including steps such as approval and sign-off by various participants. These processes can be represented as workflows, which in turn can be defined within AEM, then applied to the appropriate content pages.