PHOENIX--(BUSINESS WIRE)--The Interactive Advertising Bureau (IAB), its Mobile Marketing Center of Excellence, and BabyCenter today released “2015 State of Modern Motherhood: Mobile and Media in the Lives of Moms,” a research report that compares and contrasts the technology habits and media behaviors of online moms ages 18 to 32 in the U.S., Brazil, Canada, China and the U.K. – revealing the importance for brands to focus on mobile to reach the coveted demographic of millennial moms around the