# E-Commerce Fundamentals
Confidence: high
Last verified: 2026-05-22
Generation: human_only


## TL;DR

E-commerce is the buying and selling of goods/services over the Internet. Models: B2C (business to consumer: Amazon, Shopify stores), B2B (Alibaba), C2C (eBay, Poshmark), D2C (direct-to-consumer brands). Global e-commerce sales exceeded $6 trillion in 2024.

## Core Explanation

Key components: product listing, shopping cart, payment gateway, order fulfillment, customer service. Platforms: Amazon (marketplace), Shopify (hosted storefront), WooCommerce (WordPress plugin). SEO for e-commerce: product titles, descriptions, reviews, structured data. Conversion Rate Optimization (CRO): A/B testing, urgency, social proof.

## Further Reading

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