Which feature in Cisco WebEx is the most important differentiator compared to other
vendors in the collaboration technology?

A.
Web conferencing service is delivered over a proprietary network, which is optimized for
security, performance, and reliability.

B.
Cisco WebEx could be installed or collocated with Cisco Unified Communications
Manager

C.
With an account, everyone can join Cisco WebEx meetings

D.
Cisco WebEx is always installed on-premises.