The customer base for the Microsoft Operations Server (MOM) overlaps pretty significantly with Visio’s customer base. Most of the IT professional desktops that use MOM have Visio installed for network diagramming, database modeling, and process diagrams. (The MOM team looked at using the Visio ActiveX drawing control in this release but couldn’t use it because, among other reasons, MMC doesn’t like using an ActiveX control as a plug-in.) MOM did implement an export feature where the topology diagrams that the server creates can be saved out to Visio files. They wrote a straight-up XSLT mapping from their XML file format to the XML Visio file format to create the drawing, which can be opened up in Visio and annotated.
-- Mai-lan