Expressway (Large OVA or CE1200) is the recommended solution for deployments with
medium web app scale requirements (i.e. 800 calls or less). Expressway (Medium OVA) is the
recommended solution for deployments with small web app scale requirements (i.e. 200 calls
or less). However, for deployments that need larger web app scale, from version 3.1 we
recommend Cisco Meeting Server web edge as the required solution.