Definition
E-commerce (electronic commerce) refers to the sale or purchase of goods and services conducted over computer networks, using methods specifically designed to receive or place orders; payment and delivery can happen either online or offline. (OECD)
A broader, commonly used framing is the WTO description of e-commerce as the production, distribution, marketing, sale, or delivery of goods and services by electronic means. (Global Affairs Canada)
How it relates to marketing
E-commerce is both a revenue channel as well as a data-generating customer interaction layer. Marketing teams use e-commerce systems to:
- Connect acquisition activity (paid, organic, partners, email, social) to measurable downstream outcomes (orders, margin, repeat purchases).
- Operate the “decision-to-transaction” portion of the customer journey (product discovery, persuasion, checkout, post-purchase messaging).
- Enable personalization and experimentation by using behavioral signals (views, carts, search terms, purchase history) to adapt content, offers, and journeys.
How to calculate
E-commerce is a business model/channel, not a single metric—but it is usually managed through a standard set of performance calculations:
- Conversion rate (CVR)
CVR = Orders ÷ Sessions - Average order value (AOV)
AOV = Revenue ÷ Orders - Revenue per visitor (RPV)
RPV = Revenue ÷ Sessions (or users) - Cart abandonment rate
Abandonment = (Carts − Completed orders) ÷ Carts - Repeat purchase rate
Repeat purchase rate = Customers with 2+ orders ÷ Customers - Customer acquisition cost (CAC)
CAC = Sales + marketing acquisition spend ÷ New customers - Customer lifetime value (CLV/LTV) (one common approach)
LTV ≈ (Average order value × Purchase frequency × Gross margin) ÷ Churn rate
If you report market context, U.S. retail e-commerce sales are tracked quarterly by the U.S. Census Bureau, including e-commerce share of total retail. (Census.gov)
How to utilize
Common e-commerce utilization patterns in marketing include:
- Direct sales (B2C/DTC): product merchandising, promotions, email/SMS lifecycle programs, retargeting, and loyalty integration.
- B2B commerce: account-based merchandising (contract pricing, role-based catalogs), quote-to-order flows, reorder programs, and procurement integrations.
- Marketplace strategies: selling via third-party marketplaces while using owned channels for retention, education, and higher-margin bundles.
- Subscription and replenishment: recurring orders, save-and-subscribe incentives, churn prevention, and “next best order” recommendations.
- Omnichannel enablement: store pickup, ship-from-store, and unified returns policies to reduce friction across channels. (BOPIS/BORIS are operational patterns that often sit inside an e-commerce program.)
Compare to similar approaches
| Concept | What it is | How it differs from e-commerce |
|---|---|---|
| E-business | Digitally enabled business operations (beyond transactions) | E-commerce is usually treated as a subset focused on ordering/selling, while e-business includes broader internal processes. (Business LibreTexts) |
| M-commerce | Commerce completed on mobile devices | A channel/device context for e-commerce experiences (apps, mobile web), often with distinct UX and payment options. |
| Social commerce | Buying directly within a social platform | The transaction occurs inside the social experience rather than on a merchant site/app. (Social Media Dashboard) |
| Marketplace commerce | Transactions mediated by a marketplace operator | The marketplace owns discovery (and sometimes the customer relationship), while the merchant trades reach for fees/control. |
| Omnichannel commerce | Coordinated commerce across online and offline channels | E-commerce is a core component, but omnichannel adds cross-channel continuity (inventory, service, identity). (Oracle) |
| Headless commerce | Architecture separating frontend experience from backend commerce services | A build approach for e-commerce experiences, typically to support multiple touchpoints. (BigCommerce) |
| Agentic commerce | AI agents executing parts of shopping/checkout | Extends e-commerce interactions into agent surfaces; emerging protocols standardize agent-to-merchant flows. (OpenAI Developers) |
Best practices
- Product data quality and governance: consistent attributes, taxonomy, images, and availability signals; treat product data like a shared operational asset.
- Checkout friction reduction: minimize form fields, support multiple payment methods, and provide transparent shipping/returns details.
- Security and payment protection: if you accept payment cards online, align e-commerce payment handling with PCI DSS guidance. (PCI Security Standards Council)
- Privacy and consent management: implement appropriate consent and cookie controls where required, and document what is collected and why. (European Union)
- Measurement and attribution hygiene: define consistent session/order identity rules, standardize channel tagging, and reconcile analytics against backend order systems.
- Returns and post-purchase experience: proactive order status messaging, easy returns initiation, and clear refund timing (the internet remains undefeated at making returns the unexpected villain).
- Experimentation discipline: A/B testing on merchandising, messaging, and checkout steps with guardrails for margin and customer satisfaction.
Future trends
- Agentic shopping and standardized protocols: growing focus on enabling AI agents to complete purchases via protocols such as ACP and UCP. (OpenAI Developers)
- Composable and modular commerce stacks: continued adoption of component-based architectures (often aligned to MACH concepts) to support faster channel expansion and integration. (MACH Alliance)
- Headless-by-default experiences: more brands separating experience layers from commerce engines to support web, app, social, in-store, and emerging agentic touchpoints. (BigCommerce)
- Social and live commerce growth: platforms continue building in-app buying flows and live selling formats as part of commerce strategy. (Social Media Dashboard)
- Policy and cross-border rulemaking: ongoing evolution of e-commerce-related trade rules and regulatory expectations across markets. (European Parliament)
Related Terms
- Digital commerce
- Online marketplace
- Direct-to-consumer (DTC)
- Shopping cart abandonment
- Conversion rate optimization (CRO)
- Payment service provider (PSP)
- Product information management (PIM)
- Headless commerce
- Omnichannel commerce
- Social commerce
- Model Context Protocol (MCP)
- Universal Commerce Protocol (UCP)
- Unified Incentives Protocol (UIP)
References
Organisation for Economic Co-operation and Development. (2025). The 2025 OECD definition of e-commerce and guidelines for interpretation. (OECD)
World Trade Organization. (1998; referenced). Work Programme on Electronic Commerce definition (via Government of Canada summary page). (Global Affairs Canada)
U.S. Census Bureau. (2025). Quarterly retail e-commerce sales. (Census.gov)
PCI Security Standards Council. (n.d.). PCI DSS e-commerce guidelines (information supplement). (PCI Security Standards Council)
Your Europe (European Union). (2025). Online privacy: how to use cookies on your website. (European Union)