Screensharing is absolutely essential. In these days, it should be table stakes. Much as I sometimes hate it in general, it's a huge point in favor of Skype for Business; being able to step into a screenshare or a whiteboard is invaluable.
I cringe when I have to dial into a regular phone bridge. And as much as possible, I try to keep my landline in non-operable condition, so that support requests come in on a more useful channel.
I cringe when I have to dial into a regular phone bridge. And as much as possible, I try to keep my landline in non-operable condition, so that support requests come in on a more useful channel.