Core also enables you to run separate sites in parallel with complete change of graphic look and feel but still keeping the same database in the backend to maintain all sites. 

This approach makes it possible to have a completely different looking website that custom suits the expectations of one country while keeping another completely separate look for another country, without completely breaking up how you will have to manage both sites in your database. 
One product for example in ecommerce can show up in both isolated websites with the proper translated content without having to store two separate products in your database and manage all products in parallel across all countries.

In essence a great deal of intelligence went into building Core Website Management all in an attempt to make your life easier.