## TL;DR

Digital marketing promotes products/services via online channels: search engines (SEO/SEM), social media, email, content marketing, paid ads (PPC). Foundation: understand target audience, create valuable content, measure with analytics, iterate. The customer journey: Awareness → Consideration → Conversion → Loyalty.

## Core Explanation

SEO: organic search visibility (on-page, technical, backlinks). SEM/PPC: Google Ads, Amazon PPC (Sponsored Products). Social: Instagram/TikTok for B2C, LinkedIn for B2B. Email: highest ROI channel (~$36 per $1 spent). Content marketing: blogs, videos, podcasts — attracts audience without direct selling. Analytics: Google Analytics 4 (GA4), conversion tracking, attribution modeling.

## Further Reading

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