Miro is a great tool. Handy and smooth!

Miro is great. There are alternatives, but I like miro for its smoothness. There are plenty of templates to use, but to be honest most times I use just the blank canvas and build up. I use it for my discovery (empathize, define problems, ideation, testing). Most of the times we use it together as a collaborative tool, but only one people is editing. Mainly I create the Value proposition canvas, a lot of mindmaps about pm things and I've created a CV too (once), but I can't export to vector based PDF so it did not make much sense.

Greatly. And it is the place where I can easily validate how others are doing with their discovery async. Async is important when you are in different time zones.