This is an alternative option to the School agreement and is based on a Full-Time Employee (FTE) count, rather than the total number of desktops. The licences available under this agreement are subscription licences (not perpetual). At least one or more of the Desktop Platform products; Windows Professional upgrade, Microsoft Office Professional Plus, and/or Core CAL Suite or Enterprise CAL Suite, must be purchased for all FTEs. Once a customer licenses a product institution-wide, all institution-owned or leased devices and all faculty and staff are covered for use of that product. The institution’s students can also use licensed products on institution computers in classrooms or open access labs. EES is implemented as OVS-ES, one of the Open Value schemes.