Cisco Collaboration Architecture differentiates from other solutions in terms of a unified workspace that creates a uniq

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Cisco Collaboration Architecture differentiates from other solutions in terms of a unified workspace that creates a unique user experience. What is the main need of end users that needs to be addressed?

A. to have a centrally managed unified communication solution
B. to build up the architecture on any platform
C. to allow collaboration any time, on any device, and with any content
D. to ensure that telepresence is a mandatory part of any Cisco Collaboration Architecture
E. to establish appropriate security policies around collaboration applications