Video Conferencing Market Size By Component (Hardware [Multipoint Control Unit (MCU), Codecs, Peripheral Devices], Software [On-Premise, Cloud], Service [Professional, Managed]), By Type (Room-Based, Telepresence, Desktop), By Application (Corporate Enterprise, Education, Government, Healthcare), COVID-19 Impact Analysis, Regional Outlook, Growth Potential, Competitive Market Share & Forecast, 2021 – 2027