Online marketing, or digital marketing, includes a variety of strategies aimed at promoting products, services, or brands through the internet. It leverages digital channels like search engines, social media, email, and websites to connect with specific audiences. Key tactics include SEO, PPC advertising, social media marketing, content marketing, email campaigns, affiliate marketing, influencer partnerships, and display advertising. Benefits include the ability to target specific audiences, track results, save time and money, be adaptable, and directly engage with users.