Advertising Age: Domestic digital advertising revenue surged 19 percent to $27.5 billion during the first six months of 2015, a landmark high for the industry since the Interactive Advertising Bureau began tracking the information nearly two decades ago. Second-quarter Internet ad revenue also rose by 22.5 percent to $14.3 billion, up from $11.7 billion from the first half of last year, according to a report released by the IAB and prepared by PwC.