Microsoft has been marketing MOSS as an Enterprise Content Management (ECM) solution. As an (admittedly self proclaimed) ECM expert with a fair bit of experience in the field, I challenge this definition for MOSS.
The AIIM definition of ECM is:
“Enterprise Content Management (ECM) is the technologies used to capture, manage, store, preserve, and deliver content and documents related to organizational processes. ECM tools and strategies allow the management of an organization's unstructured information, wherever that information exists”
MOSS is definitely missing some of these major elements. I have blogged on this subject before, and I stick with my theme from those posts, namely that Microsoft removed the word 'portal' from the products title for possibly good marketing reasons, but when it comes right down to it, MOSS is a portal server framework, akin to IBM WebSphere, Oracle (BEA) WebLogic/AquaLogic and Oracle Portal 10g, BroadVision, Liferay, etc.