Digital marketing utilizes online platforms and tools to promote products and services using methods like search engine optimization (SEO), social media marketing, and Google Adwords. SEO involves optimizing websites to rank higher organically in search engine results. Social media marketing uses platforms like Facebook and Twitter to interact with customers and build relationships. Google Adwords is a pay-per-click advertising platform where advertisers only pay when someone clicks their ad. Digital marketing allows businesses to efficiently reach customers through the internet.