The following domain model illustrates the complete, end-to-end, orchestrated ALM architecture. This includes the high level objects that make up the Serena ALM offerings, including Service Management, Request Management, Requirements Management, Development Management, Release Management, and Test Case Management. This diagram complements the end-to-end scenario by clarifying what objects the various systems include, and how those objects interact. This diagram, like others in this document, use simple standard UML notation. Please see "UML Notation Quickstart" on page 6.