This post falls into the “my two cents worth” category.
As most know, starting with the 2007 version of SharePoint,
the product is available in three editions. In the 2010 version of SharePoint,
those three are SharePoint Foundation, Server Standard, and Server
Enterprise. Microsoft publishes a good
comparison of what you get in each edition here
for SharePoint 2010.
I think most people know that the Foundation edition of
SharePoint does not require any additional license purchase other than Windows
Server licenses and Windows Server CALs.
People often talk about the Foundation Edition being “free.” We could debate whether or not this is really
true given that Windows Server licenses are still required, but that debate is
not for this post.

