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Aug 31, 2011
As you mentioned the Framework Project is a 'Utilities' type project, where generally applicable code resides, such as Encryption, Logging, etc. But it also contains the shopping Cart which is used (as a utility) by all Presentation Layers (UIs).
In our current implementation the shopping cart is not persistent. If it were, then the Cart would be a Business Object and it would have certainly ended up in the Business Layer.
I hope this helps.