ERP and MES are like apples and oranges

The apples and oranges ad is really smart. This came out around 2001 when we were starting to do "supply chain enablers"

Now we have the Wonderware Enterprise Integrator

Wonderware Enterprise Integrator enables information exchange between Wonderware Software and Enterprise Business Systems and provides a standard software approach to Plant-to-Enterprise integration. It is designed to ensure continued plant operations by enabling business and manufacturing systems to work in a complementary fashion that is loosely coupled yet extremely reliable.