Lowell McAdam, CEO of Verizon Communications

Verizon's purchase of Yahoo and, separately, its growth in wireless means the company has access to more consumer data than ever before. That information could become one of its most valuable assets as it seeks to become an advertising giant.

Information — including where people are, what they are watching on TV and what type of hand soap they buy online — is used to power advertising technology. The more details a company has on a person's behavior, the more tailored the digital ads can be.