In Dynamics AX 2012 we have many options to utilize the Site Dimension; we can make it represents country/region/state all options are upon business requirements.
This Site dimension function in MS Dynamics AX 2012 is out of the box function; do not need to activate it as we used to do in previous version and site dimension could be a control point in the inventory items as well, where the user could not perform transaction without identifying the site dimension, and we have option to let AX validate on item site dimension, where the user could not use change site.
There is very detailed blog-post on this topi by Mohamed Aamer on his Blog Read the complete details HERE.
Inventory Site Dimensions In Dynamics AX 2012
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