Digital marketing encompasses online marketing tactics and strategies used to promote products through digital channels like search engines, social media, email and websites. Unlike traditional marketing, digital marketing leverages the internet's vast reach and interactivity to connect with potential customers. It offers advantages like global reach, targeted advertising, data-driven insights, and cost-effectiveness. Common digital marketing tactics include search engine optimization, content marketing, social media marketing, email marketing, pay-per-click advertising, and affiliate marketing.