--- title: Ecommerce — definition | RGM® Glossary url: https://realgrowthmatters.com/glossary/ecommerce/ updated: 2026-06-10 source_html: https://realgrowthmatters.com/glossary/ecommerce/ --- # Ecommerce e·com·mercenoun The whole trade, moved online — storefront, cart, payment, and delivery, and the metric chain that decides who profits from it. Term : Ecommerce Spans : Storefront, cart, payment, fulfillment Models : DTC, marketplace, B2B, social commerce Runs on : The conversion-AOV-frequency-margin chain ## Forms & parts of speech ecommerce · noun Trade conducted online. "**Ecommerce** is four numbers in a trench coat - traffic, conversion, order value, and repeat rate." ## Definition in plain terms Ecommerce is the buying and selling of goods and services online — the storefront, catalog, cart, checkout, payment, and fulfillment that move a transaction from browse to doorstep. It spans models this glossary treats individually: DIRECT-TO-CONSUMER brands on their own stores, marketplaces aggregating sellers, B2B commerce moving wholesale online, DROP-SHIPPING's inventory-free variant, and the social-and-chat commerce the CONVERSATIONAL entries cover. As a sector it is simply retail's online half — and as a discipline it is a metrics chain anyone can read. ## The mechanics The operating math compresses to a chain: revenue = traffic × CONVERSION RATE × AVERAGE ORDER VALUE × repeat frequency, with CONTRIBUTION MARGIN after product, shipping, payment, and returns deciding whether the revenue was worth having. Every ecommerce growth lever attacks one link — acquisition fills traffic (at the CAC the COHORT-LTV math must support), CRO and CHECKOUT-ABANDONMENT work move conversion, merchandising and bundles lift AOV (the BASKET-SIZE entries), lifecycle and retention drive frequency (the email, SMS, and CRM-RETARGETING playbooks), and operations defend margin (fulfillment promises, returns policy, the CURBSIDE-and-BOPIS bridge to stores). The platform layer (storefront systems, payments, COMPOSABLE-COMMERCE architectures) sets capability ceilings, and the channel layer keeps shifting — marketplaces for capture, social commerce for discovery, retail media monetizing the storefronts themselves. What experience keeps re-teaching: ecommerce businesses die of margin, not revenue (the DTC entry's reckoning generalized), the second purchase is where the economics start working, and operational promises — delivery dates, stock truth, easy returns — convert and retain harder than most creative. ## When it matters Ecommerce matters as the default context for half this glossary — the metrics chain above is the skeleton its entries hang on. As a strategic matter it now means omnichannel: pure-online and pure-physical are both edge cases, with stores, sites, marketplaces, and chat composing one trade. The discipline is chain-literacy — know which link each initiative moves, price every win in contribution margin, and treat the second purchase as the business model's real start line. **Worked example.** A kitchen-goods retailer reads its ecommerce P&L as one number - revenue up 18% - until the chain decomposition tells the regression story: traffic up 30% (bought, at rising CAC), conversion down, AOV flat, repeat rate sliding, and contribution margin per order down 22% under free-shipping-always and a returns spike. The rebuild assigns one owner per link: acquisition reweights to channels whose cohorts repeat (the cohort-LTV lens), checkout work recovers conversion (payment options, the abandonment flow), bundles and thresholds lift AOV while making free shipping earned rather than universal, and a replenishment email program turns the cookware's natural reorder cycle into frequency. Revenue grows 11% the next year - slower than the vanity year - while contribution profit doubles. The chain was always the business; the single number had just been hiding which links were rusting. **Failure modes to watch.** Reading revenue while margin rusts link by link; traffic bought past the CAC its cohorts repay; free-shipping-always eroding the economics conversion gains can't refund; first-purchase obsession when the second purchase is the model; and operational promises (delivery, stock, returns) treated as logistics while they quietly run conversion. ## Synonyms & antonyms ### Synonyms ecommercee-commerceonline retail ### Antonyms brick and mortar (alone)offline trade ## Origin & history Electronic commerce predates the web — EDI moved B2B orders in the 1970s-80s — but the 1994-95 cohort (Amazon, eBay, the first secure online transactions) founded the consumer sector, and successive waves (mobile, marketplaces, social commerce) moved it from retail's experiment to its default half. Etymology: [source](https://en.wikipedia.org/wiki/E-commerce). ## Usage trends Search interest for this term over the last five years: [View interest-over-time on Google Trends →](https://trends.google.com/trends/explore?q=ecommerce&date=today%205-y) ## Common questions What is ecommerce? : The buying and selling of goods and services online — storefront, cart, payment, and fulfillment — across DTC, marketplace, B2B, and social-commerce models. What is the core ecommerce equation? : Revenue = traffic × conversion rate × average order value × repeat frequency — with contribution margin after product, shipping, payments, and returns deciding what the revenue was worth. What do ecommerce businesses get wrong? : They die of margin, not revenue — overbought traffic, universal free shipping, and first-purchase obsession, when the second purchase is where the economics start working. ## Related tools & calculators - tool[AOV calculator](/tools/aov-calculator/) - tool[ROAS calculator](/tools/roas-calculator/) ## Resources & people to follow - reference[Wikipedia — E-commerce](https://en.wikipedia.org/wiki/E-commerce) - referenceEcommerce unit-economics practice literature - referenceRGM analysis — know which chain link each initiative moves; the second purchase is the start line Curated, non-competitor resources verified per term. ## Related training - module[Performance marketing](/training/performance-marketing-foundations/) ## Disciplines Areas of marketing where ecommerce is a core concern: [Performance marketing](/training/performance-marketing-foundations/)[Growth strategy](/training/growth-marketing-foundations/) ## Read next ## Related terms [Direct-to-consumer (DTC)](/glossary/direct-to-consumer-dtc/)[Checkout abandonment](/glossary/checkout-abandonment/)[Average order value](/glossary/average-order-value/)[Drop shipping](/glossary/drop-shipping/)[Composable commerce](/glossary/composable-commerce/) ## Sources 1. trends[Google Trends — "ecommerce"](https://trends.google.com/trends/explore?q=ecommerce&date=today%205-y)