Miro is a scalable, secure, cross-device and enterprise-ready team collaboration whiteboard for distributed teams.
I like to use it as it is extremely simple and still very useful. Many times when we are having a brainstorming in an online team meeting, sharing the screen and creating a mind map with Miro can visualize the discussed process within seconds.
Its indeed one of the great tool to do mind-mapping and problem solving. Again I liked that it is 'clean' and user-friendly.