How to Measure Success on Different Platforms

Are there platforms right now that just work better or worse for particular strategies like Pinterest is really strong for e-commerce and YouTube is for branding? Are there platforms that we might not realize their strengths and weaknesses that we should be thinking about? I think this is a two-prong question because on one side, there are definitely platforms that align themselves more to different sort of KPIs. But even within those platforms, there are different products that align themselves a little bit more.