Digital marketing is the promotion of products or services using digital channels such as search engines, social media, email, websites, and mobile apps. It allows businesses to reach a global audience, engage with customers in real time, and track campaign performance through data and analytics. Key strategies include search engine optimization (SEO), content marketing, pay-per-click (PPC) advertising, social media marketing, and email campaigns. Digital marketing is cost-effective and highly targeted, making it ideal for both small businesses and large enterprises. With the rise of mobile usage and online shopping, digital marketing has become essential for business growth and brand visibility.