The new site policy options in SharePoint 2013 ar a vast step towards better and enforcable governance.by allowing retention policies to be applied, or even retrospectively applied to sites and site collections. This means automatic site deletion or closure (technically read only mode) on a defined retention schedule similar to what you can usually do with a document or record.
This is going to become one of my favourite blog posting to refer to about this subject and I love the positive way it’s written:
http://blogs.technet.com/b/tothesharepoint/archive/2013/03/28/site-policy-in-sharepoint.aspx
Remember, it doesn’t excuse you from having to formalise this policy opportunity as part of a wider governance requirement with the business and ensure it is what you want to see happening autom...
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