Marketing has evolved significantly from word-of-mouth promotion thousands of years ago to today's digital landscape dominated by social media and smartphones. The document traces the major developments in marketing from the printing press in 1450 allowing print to drive marketing for hundreds of years, to radio and TV ads in the 1920s and 40s making broadcast a major force along with print. Computers and the internet in the 1980s and 90s ushered in further changes, followed by search engines in 1995 and pay-per-click advertising in 1998 transforming how people find information online. Today, over 75% of Americans own smartphones, and digital platforms like Facebook with nearly 2 billion users have become central to how companies can join conversations and connect with people