The Speed of Change in Campaign Technology

I recently read Mark Pack's 101 Ways to Win Elections.  Despite the latest edition having been published in 2016, it already strikes me as somewhat out of date as it talks about the "online campaign" as a totally separate thing from the rest of the campaign whereas these days there is just one campaign with different tools, direct mail, emails, facebook, doorknocking etc. as elements.   It is astonishing and slightly scary how quickly things can change.