Zoom.us is a wonderful tool to conduct meetings, web conferencing and video conferencing. The online
meetings can be conducted in HD video and high quality audio, can handle upto 500 video participants and can have screen sharing and full suite of collaboration features.
Zoom training sessions can have Co-annotation and whiteboarding, Video breakout rooms, MP4 and M4A local and cloud recording and also an Attention indicator.
A Participant does not require a Zoom account in order to join a meeting. Participants can join a meeting from their phone, desktop, mobile and tablet devices. Apps for Android and iOS are easily downloadable for installation.
You can try the Basic Plan free and then, once satisfied, move on to the higher plans, based on your needs. Try it out, it may be the only connectivity solution you may need!
Android : https://goo.gl/dpFL4y iOS : https://goo.gl/njcTe4
On-lyneTech 
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