WhatsApp isn't a conference tool. You can't have more than a handful of people on a call. And it's with people in your contacts on your mobile phone. I presu

WhatsApp isn't a conference tool. You can't have more than a handful of people on a call. And it's with people in your contacts on your mobile phone. I presume the same with telegram. Skype for business has been deprecated by Microsoft in favour of teams. I use it daily and it's just not that great. It requires a Microsoft subscription. Google hangouts meet only just became available for everyone to use. Before it required a Google business subscription. It makes my CPU usage max out and cooks my laptop. Zoom works well with 10s of people in a call, it's easy to use. Breakout rooms is a useful feature. With COVID so many people are using it not because of a marketing campaign but because it's easy to use. I think it's like asking "why is a an iPhone better than a Blackberry? They both make calls and send email." But I think Zoom has built their product to not be "enterprise" which in my opinion is a good thing. As that usually means you need to accept jank. Of course there are security issues with the software as well.