Ken Auletta’s new book “The Epic Disruption of the Ad Business (and Everything Else)” is his insider account of the current chaos and transformative change besetting the advertising industry.

The media business is locked in an existential struggle to adapt to complex changes in technologies, demographics and behaviors, among many complex forces at work. It’s a story of the decimation of 20th Century Madison Avenue by 21st Century digital and data ascendance.