This is a really good article from McKinsey. For me, it highlights the rapidly increasing need for digital expertise on the board. One technology area that's got huge ramifications (although it's not mentioned in this article) is blockchain technology - we all need to come up to speed with that as it's highly disruptive.
Few boards have enough combined digital expertise to have meaningful digital conversations with senior management.
Boards must move beyond an arms-length relationship with digital issues. They must view themselves as the ultimate catalysts for digital transformation.