Igor Sakhnov, the Development Manager for SQL Server Modeling Services, talks about the purpose of Oslo Repository. 

Enjoy the podcast: http://www.informit.com/podcasts/episode.aspx?e=743c3633-5690-4aae-b3a7-330df06b6f08

Obveiously this podcast was done before the new name for Oslo was announced. "Oslo" is now called "SQL Server Modeling" and "Repository" is called "SQL Server Modeling Services".  Since the name is a mouthful, the team put a lot of thought into its acronym. SSMS - the most obvious one - is already taken by SQL Server Management Studio.  Many have given it the acronym SSMoS (pronounced SMoss), but many of us are still having a hard time adapting to that.