TT goes on to list a number of tactics, in an effort to isolate a single tactic that defines or otherwise embodies the essence of digital marketing. However, to define digital marketing by a tactic or list of tactics is both narrow minded and shortsighted.
Digital Marketing is more than online marketing. Digital marketing is more than one or two tactics. Digital marketing is not about marketing to a platform or a technology. Digital marketing is the act of marketing in a digital age.
As consumer's live become increasingly digital, as convergence and "always on" connectivity become increasingly mainstream, new doors are opened to marketers. Marketers now gain the ability to enhance, empower, (interrupt?) and otherwise live within ever deeper segments of consumer's lives, well beyond the interruption and often irrelevance of the 30 second spot.
Digital marketing is more than a tactic, it's marketing reborn again in a digital era. It is about persuasive and at times pervasive engagement. It is about reinventing or more accurately the evolutionary revolution of the brand experience. Digital marketing is about returning to the core of marketing, the human experience, and enabling brand experiences and interactions in this new dynamic.
note: the Google Dictionary image above is photoshopped. The cartoon above is the work of Avi Steinberg, close friend and raving lunatic.