How does ray snapping in the editor work?

How does the new ray snapping while moving an object in the Scene view work? Is there a special key command for it? Are there restrictions on what can be snapped to (ie, does it need a collider, can only primitives/terrain snap)?

This question was answered by aNTeNNa trEE on the forums in this thread.

To summarize: use global mode, hold (cmd/ctrl)+shift and drag the center of the translate gizmo of the object. Objects will snap at the vertices of a collider.