This book presents contemporary discussions on how consumers think, decide, and act in the digital world. Through contributions from scholars across diverse marketing domains, the book explores online decision-making, social engagement, influencer dynamics, and the growing importance of privacy and ethical responsibility. It connects classical consumer behavior theories with emerging practices shaped by digitalization. The chapters extend that tradition by offering theoretical and empirical insights for academics, practitioners, and policymakers who wish to understand how consumer behavior evolves within dynamic digital marketplaces. This edited volume originated from the International Conference Marketing Communication 2025 (ICMC), organised Mudra Institute of Communications, Ahmedabad, India.