This is the minutes of the /base session, held at 15:00 in "the box" at Codegarden 09.
The /base functionality in Umbraco supports development of simple "REST-like" features in Umbraco. With /base it is possible to develop class-libraries that return data in xml form from simple URLs, or create calls that modify data in the Umbraco backend or in custom datastores via simple urls.
The session consisted mostly of an introduction to /base by yours truly and demoing and elaborating by the mastermind of /base Per Plough Hansen.
The facts and learnings from this session has been added to the wiki section about /base.
http://our.umbraco.org/wiki/reference/umbraco-base
(The link functionality in this editor doesn't seem to work)