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Microsoft has been working on governance issues for Sharepoint since 2004 or so, and you can learn a lot about managing Sharepoint in a corporate environment by checking out the articles in Technet. Licensing obviously varies based on your Microsoft licensing agreements, but the costs are about $6000/server, or if you're running a farm of Sharepoint servers, it can cost close to $5000 + $1200 per server on the farm. If the IT department is to take ownership of multiple Sharepoint servers, there may be some benefits to migrating them to virtual machines and running them on some kind of cluster to make maintenance a little more homogeneous.