Ecommerce Glossary
Understand the key terms, metrics, and concepts that drive online store success. From analytics to UX, find clear explanations for every ecommerce term.
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182 terms
3D SecureAn authentication protocol that adds a verification step during online card payments to reduce fraudCheckoutA/B TestingA method of comparing two versions of a webpage or element to determine which performs better based on user behaviorCROAbove the FoldThe portion of a webpage visible without scrolling, considered the most valuable area for key content and CTAs.UXActivation RateActivation rate is the percentage of new users who complete a key first action that shows they have experienced a product's core value, such as a first purchase.GrowthAddress AutofillAutomatic completion of address fields using browser data, saved profiles, or predictive address APIsCheckoutAddress ValidationAutomated verification that shipping and billing addresses are real, complete, and deliverableCheckoutAI PersonalizationUsing machine learning algorithms to automatically tailor content, recommendations, and experiences to individual usersPersonalizationAnchor TextAnchor text is the visible, clickable text in a hyperlink that describes the linked page's content for users and search engines.UXAnchoringAnchoring is a cognitive bias where the first piece of information encountered heavily influences subsequent judgments and decisions.PsychologyAPIAn API (Application Programming Interface) allows different software systems to communicate and exchange data automatically.TechnicalARRAnnual Recurring Revenue measures the predictable yearly revenue from subscriptions and contractsGrowthAttribution ModelAttribution models assign credit to marketing touchpoints that contribute to conversions, helping understand which channels drive results.MarketingAttribution WindowsThe time period during which a conversion can be credited to a specific marketing touchpoint or interactionAnalyticsAuthorityAuthority is a persuasion principle where people follow the advice of credible experts, making expertise signals powerful conversion tools.PsychologyAuto-Apply DiscountAutomatic application of promotional codes or discounts without requiring customers to enter a codeCheckoutAutocompleteAutocomplete is a search feature that suggests queries or products in a dropdown as a shopper types, speeding up product discovery and reducing typos.Search & NavigationAverage Order ValueThe average amount spent each time a customer places an order, calculated by dividing total revenue by number of ordersCROBackorderAn order placed for a product that is temporarily out of stock, with fulfillment scheduled when inventory becomes available.MerchandisingBayesian TestingAn A/B testing approach that calculates the probability one variant is better than another, updating beliefs as data accumulatesTestingBehavioral TargetingBehavioral targeting delivers personalized content and offers based on how customers interact with your website, including browsing and purchase history.PersonalizationBestseller RankingA metric that ranks products by sales volume within a category, helping shoppers identify popular items and aiding merchandising decisions.MerchandisingBilling vs Shipping AddressThe distinction between where payment is charged (billing) and where products are delivered (shipping)CheckoutBNPLBuy Now Pay Later lets customers split purchases into installments, often interest-free, at checkoutCheckoutBounce RatePercentage of visitors who leave your website after viewing only one page without any interaction or engagementAnalyticsBreadcrumbsBreadcrumbs are a secondary navigation element showing the user's current location within a website's page hierarchy.Search & NavigationBreak-Even PointThe sales level where total revenue equals total costs, meaning the business neither makes profit nor loses moneyAnalyticsBundlingA merchandising strategy that groups multiple products together and sells them as a single package, often at a discount.MerchandisingCacheA cache stores copies of frequently accessed data closer to users, reducing load times and server strain for faster page delivery.TechnicalCall to Action (CTA)A button, link, or prompt that encourages users to take a specific action like 'Add to Cart' or 'Buy Now'.UXCanonical URLA canonical URL tells search engines which version of a page is the original when duplicate or similar content exists at multiple addresses.SEOCart Abandonment RatePercentage of shoppers who add items to cart but leave without completing the purchaseCROCart ExpirationTime limit after which items in a shopping cart are automatically removed or the cart session endsCheckoutCategory Page (PLP)A category page, or product listing page (PLP), is the page that displays all products in a category so shoppers can browse, filter, and sort them before opening a product.MerchandisingCDNA network of servers distributed globally that delivers website content from locations closest to each visitor for faster loadingTechnicalCheckout Completion RateThe percentage of users who start checkout and successfully complete their purchaseCheckoutChoice OverloadChoice overload occurs when too many options lead to decision paralysis, lower satisfaction, and reduced likelihood of making any choice.PsychologyChurn RateChurn rate measures the percentage of customers who stop purchasing from a business within a specific time period.GrowthClick-Through Rate (CTR)CTR measures the percentage of people who click a link after seeing it, indicating how compelling your ads, emails, or search results are.AnalyticsClient-Side RenderingClient-side rendering (CSR) builds web pages in the browser using JavaScript, loading content after the initial page shell arrives.TechnicalCLV:CAC RatioThe relationship between customer lifetime value and acquisition cost, indicating whether customer acquisition is profitableMarketingCognitive LoadThe mental effort required to process information, make decisions, and complete tasks while using a website or application.UXCohort AnalysisCohort analysis groups customers by shared characteristics to track behavior patterns and measure retention over time.AnalyticsConfidence IntervalA range of values that likely contains the true effect of a test, showing the uncertainty around measured resultsTestingConsistencyConsistency is the psychological drive to behave in ways that align with previous commitments, making small initial actions lead to larger ones.PsychologyContextual TargetingContextual targeting displays ads based on the content of the page being viewed rather than tracking user behavior across websites.PersonalizationContribution MarginThe amount remaining from sales revenue after variable costs are deducted, used to cover fixed costs and generate profitAnalyticsControl vs VariantThe two versions compared in an A/B test: the original (control) and the modified version (variant) being testedTestingConversion EventsConversion events are tracked actions that represent valuable user behaviors, such as purchases, sign-ups, or form submissions.AnalyticsConversion LiftThe percentage increase in conversions achieved by a test variant compared to the original control versionCROConversion RatePercentage of sessions that result in a desired action such as a purchase, signup, or add to cartCROCore Web VitalsGoogle's three key metrics measuring page loading speed, interactivity, and visual stability that affect user experience and search rankingsPerformanceCPACPA (Cost Per Acquisition) measures the average cost to acquire one customer or conversion through a specific marketing campaign or channel.MarketingCrawl BudgetCrawl budget is the number of pages search engines will crawl on your site within a given timeframe, affecting how quickly content gets indexed.SEOCritical CSSCritical CSS is the minimum CSS needed to render above-the-fold content, inlined in HTML to eliminate render-blocking requests.PerformanceCross-sellA sales technique that suggests complementary products to customers based on their current selection or purchase.MerchandisingCSSThe styling language that controls how websites look, including colors, fonts, layouts, spacing, and visual effectsTechnicalCumulative Layout ShiftA Core Web Vitals metric measuring how much visible content shifts unexpectedly during page load, causing a poor user experiencePerformanceCustomer Acquisition Cost (CAC)Total investment required to convert a prospect into a paying customer, including advertising, salaries, and toolsMarketingCustomer JourneyCustomer journey maps all touchpoints and stages a shopper experiences from first awareness through purchase and beyond.GrowthData LayerA data layer is a JavaScript object that stores structured information about page content and user interactions for analytics tracking.AnalyticsDecoy EffectThe decoy effect occurs when adding a third, inferior option makes one of the original two choices more attractive by comparison.PsychologyDrop-off RatePercentage of users who abandon a multi-step process at each stage, such as checkout or signup flowsCRODuplicate ContentDuplicate content refers to identical or very similar content appearing at multiple URLs, which can dilute SEO signals and confuse search engines.SEODynamic ContentDynamic content automatically changes based on user data, behavior, or context to deliver personalized experiences across websites and emails.MarketingDynamic PricingA pricing strategy that adjusts product prices in real-time based on demand, competition, inventory levels, and other market factors.MerchandisingDynamic SegmentsDynamic segments automatically update customer groups in real-time based on behavior and data changes, unlike static segments that remain fixed.PersonalizationEndowed Progress EffectThe endowed progress effect shows that people work harder toward goals when given artificial advancement, making head starts powerful motivators.PsychologyEngagement RatePercentage of sessions where users actively interact with your website through scrolling, clicking, or spending meaningful timeAnalyticsEnhanced EcommerceEnhanced Ecommerce is a set of tracking features that measure user interactions throughout the shopping journey from product views to purchases.AnalyticsEvent TrackingMethod of recording specific user interactions on a website such as clicks, form submissions, video plays, and scroll depthAnalyticsExit RatePercentage of visitors who leave your website from a specific page, regardless of how many pages they viewed beforeAnalyticsExpansion RevenueAdditional revenue generated from existing customers through upgrades, add-ons, or increased usageGrowthExperience Eligibility RulesConditions that determine which users qualify to see specific personalized experiences or experimentsPersonalizationExperience VariantsDifferent versions of content, design, or functionality shown to users during personalization or experimentationPersonalizationExperiment PowerThe probability that a test will detect a real effect when one exists, typically set at 80% for A/B testsTestingExpress CheckoutStreamlined payment flow that skips traditional checkout steps by using pre-saved payment and shipping informationCheckoutFaceted NavigationA filtering system that lets shoppers narrow product results by multiple attributes like price, size, color, and brand.Search & NavigationFID (First Input Delay)FID measured the delay between a user's first interaction and the browser's response. It was replaced by INP in March 2024.PerformanceFirst-Party DataFirst-party data is information collected directly from your customers and website visitors, owned and controlled by your business.AnalyticsFixed CostsBusiness expenses that remain constant regardless of sales volume, such as rent, salaries, and software subscriptionsAnalyticsForm Abandonment RateForm abandonment rate is the percentage of users who start filling in a form, usually checkout, but leave before submitting it.CheckoutForm Field Error RateThe percentage of form submissions or field interactions that trigger validation errorsCheckoutFramingFraming is a cognitive bias where decisions change based on how information is presented, even when the underlying facts remain identical.PsychologyFraud PreventionSystems and processes designed to detect and block fraudulent transactions before they completeCheckoutFunnelA visual model of the step-by-step path visitors take from first interaction to completing a conversion goalCROGA4 (Google Analytics 4)GA4 is Google's current analytics platform that uses event-based tracking to measure user behavior across websites and apps.AnalyticsHeatmapsVisual representations of user behavior showing where visitors click, scroll, and move their cursor on a webpageCROHypothesis PrioritizationA systematic approach to ranking experiment ideas based on potential impact, confidence, and effort requiredTestingIndexationIndexation is the process by which search engines add web pages to their database, making them eligible to appear in search results.TechnicalInformation Architecture (IA)The structural design of a website that organizes content and navigation to help users find what they need.UXInline ValidationReal-time form feedback that shows errors or confirmations as users fill out each fieldCheckoutINP (Interaction to Next Paint)INP measures the time from when a user interacts with a page to when the browser displays the visual response to that interaction.PerformanceInternal LinkingInternal linking connects pages within your website, distributing page authority and helping search engines discover and understand your site structure.SEOJTBDJobs to Be Done is a framework for understanding why customers buy products based on the progress they want to makeGrowthKeyword ResearchKeyword research is the process of identifying search terms people use to find products, helping optimize content for organic search visibility.SEOLazy LoadingLazy loading defers loading of images and other resources until they are needed, reducing initial page load time and bandwidth usage.PerformanceLCP (Largest Contentful Paint)LCP measures the time it takes for the largest visible content element to render on screen, indicating perceived page load speed.PerformanceLoss AversionLoss aversion is the psychological tendency to feel losses more intensely than equivalent gains, typically by a factor of two.PsychologyLTVLTV (lifetime value), also called customer lifetime value or CLV, estimates the total revenue a business can expect from one customer across the whole relationship.MarketingMacro-ConversionsPrimary conversion goals that directly generate revenue or lead to immediate business value, such as completed purchases or paid subscriptionsCROMargin of SafetyThe difference between current sales and break-even sales, showing how much revenue can drop before a business starts losing moneyAnalyticsMDE (Minimum Detectable Effect)The smallest improvement in conversion rate that an A/B test can reliably detect with statistical significance.TestingMerchandising RulesAutomated logic that controls how products are displayed, sorted, and promoted across an e-commerce storeMerchandisingMessage-Market FitThe alignment between how you describe your product and how your target market thinks about their problemsGrowthMeta DescriptionA meta description is the HTML snippet shown below search result titles, influencing click-through rates without directly affecting rankings.SEOMeta TitleA meta title is the HTML title tag that appears in search results and browser tabs, directly influencing click-through rates and rankings.SEOMicro-ConversionsSmall user actions that indicate progress toward a primary conversion goal, such as email signups, add-to-cart clicks, or account creationCROMinificationMinification removes unnecessary characters from code files without changing functionality, reducing file size and load times.PerformanceMobile-First DesignA design approach that prioritizes the mobile experience first, then progressively scales up to larger screens.UXMRRMonthly Recurring Revenue measures the predictable monthly revenue from subscriptions and recurring paymentsGrowthMulti-Touch AttributionMulti-touch attribution distributes conversion credit across all marketing touchpoints in a customer journey rather than crediting just one.MarketingMultivariate Testing (MVT)A testing method that simultaneously tests multiple variables and their combinations to find the best-performing versionCROOne-Click CheckoutPurchase completion with a single click using pre-stored payment and shipping informationCheckoutOrder BumpSmall add-on offer presented during checkout that customers can add to their order with a single clickCheckoutOrder SummaryAn order summary is the checkout component that lists the items, quantities, prices, discounts, shipping, tax, and final total so a shopper can verify exactly what they are paying before they buy.CheckoutOut-of-Stock HandlingStrategies for managing unavailable products to maintain customer experience and capture future demandMerchandisingP-ValueThe probability that observed test results occurred by random chance, used to determine statistical significanceTestingPage Load SpeedTime it takes for a web page to fully display its content, measured from the moment a user requests the pagePerformancePages Per SessionThe average number of pages a visitor views during a single session on your websiteAnalyticsPaginationPagination divides content across multiple pages using numbered navigation, affecting how search engines crawl and index category pages.SEOPayment Error RateThe percentage of checkout attempts that fail due to declined cards, processing errors, or authentication failuresCheckoutPredictive TargetingPredictive targeting uses machine learning to anticipate customer behavior and deliver personalized experiences before customers take action.PersonalizationPrefetchPrefetch is a resource hint that tells browsers to download resources the user will likely need for future page navigations.PerformancePreloadPreload is a browser resource hint that tells the browser to download a critical file early, before it would normally find it, so the page renders faster.PerformanceProduct AffinityProduct affinity identifies which products customers frequently purchase together, enabling cross-sell recommendations and bundle strategies.PersonalizationProduct Recommendation EngineSoftware that analyzes customer data to suggest relevant products, using algorithms based on browsing history, purchases, and behavior patterns.MerchandisingProduct-Led GrowthA growth strategy where the product itself drives customer acquisition, conversion, and expansionGrowthProfit MarginProfit margin is the percentage of revenue that remains as profit after subtracting costs, measured as gross margin (after product cost) or net margin (after all expenses).AnalyticsProgress IndicatorsVisual elements showing customers where they are in a multi-step checkout process and how many steps remainCheckoutReciprocityReciprocity is the psychological tendency to return favors, making people more likely to buy after receiving something valuable first.PsychologyRender-Blocking ResourcesRender-blocking resources are CSS and JavaScript files that prevent the browser from displaying page content until they finish loading.PerformanceResponsive DesignA web design approach where layouts automatically adjust to fit any screen size, device, or viewport width.UXRetention RateRetention rate measures the percentage of customers who continue buying from your store over a specific time period.MarketingReturn on Ad Spend (ROAS)Marketing metric measuring revenue generated for every dollar spent on advertising, expressed as a ratio or percentageMarketingSample Ratio Mismatch (SRM)A data quality issue where the actual traffic split between test variants differs significantly from the intended ratioTestingSamplingSampling is when analytics platforms analyze a subset of data instead of the complete dataset, providing faster results with some accuracy tradeoff.AnalyticsScarcityScarcity is a persuasion principle where limited availability increases perceived value and motivates faster purchasing decisions.PsychologySchema MarkupSchema markup is structured data code that helps search engines understand page content and display rich snippets in search results.SEOScroll DepthScroll depth measures how far down a page users scroll, indicating content engagement and where visitors lose interest.AnalyticsSearch IntentSearch intent is the underlying goal behind a search query, determining whether users want information, navigation, comparison, or purchase.SEOSearchandisingSearchandising is the practice of merchandising search results to promote specific products while maintaining relevance to user queries.Search & NavigationSegmentationSegmentation divides customers into groups based on shared characteristics or behaviors, enabling targeted marketing for each group.MarketingSEOThe practice of improving a website's visibility in search engine results to drive organic (non-paid) trafficSEOSERP FeaturesSERP features are special result formats like featured snippets, shopping carousels, and knowledge panels that appear beyond standard blue links.SEOServer-Side RenderingServer-side rendering (SSR) generates complete HTML pages on the server before sending them to browsers, improving SEO and initial load speed.TechnicalSession DurationThe total time a visitor spends on your site during a single session, from first page load to last interactionAnalyticsSession RecordingsVideo playbacks of individual user sessions showing exactly how visitors interact with your websiteCROShipping Rate CalculationThe process of determining shipping costs based on package dimensions, weight, destination, and carrier ratesCheckoutSitemapA sitemap is a file listing all important pages on your website, helping search engines discover and index your content more efficiently.SEOSKUStock Keeping Unit - a unique alphanumeric code assigned to each product variant for inventory tracking and management.MerchandisingSocial NormsSocial norms are unwritten rules about accepted behavior that influence purchasing decisions by signaling what others do and approve of.PsychologySocial ProofSocial proof is the psychological phenomenon where people copy others' behavior, making reviews and testimonials powerful conversion drivers.MarketingSorting OptionsSorting options are controls that let shoppers reorder product listings by criteria like price, popularity, newest, or ratings.Search & NavigationSplit URL TestingA testing method where different page versions are hosted on separate URLs and traffic is split between themCROStatic Site GenerationStatic site generation (SSG) pre-builds HTML pages at deploy time, delivering extremely fast load speeds by serving ready-made files from CDNs.TechnicalStatistical SignificanceA measure indicating whether test results are likely due to actual differences rather than random chanceTestingSynonym GroupsSynonym groups are collections of related search terms that a search engine treats as equivalent to improve result relevance.Search & NavigationTag ManagerTag Manager is a platform that lets you deploy and manage tracking codes on your website without editing source code directly.AnalyticsTBT (Total Blocking Time)TBT measures the total time the main thread was blocked by long tasks, preventing the page from responding to user input.PerformanceTest Duration CalculatorA tool that estimates how long an A/B test needs to run to reach statistical significanceTestingThird-Party ScriptsThird-party scripts are external JavaScript files loaded from other domains, such as analytics, ads, chat widgets, and social media buttons.PerformanceTime on PageThe amount of time a visitor spends viewing a single page before navigating away or closing the browserAnalyticsTopic ClustersTopic clusters are groups of related content pages linked to a central pillar page, establishing topical authority for better search rankings.SEOTriggered OverlaysTriggered overlays are popups that appear based on specific user behaviors like exit intent, scroll depth, or time on page.PersonalizationTrust BadgesTrust badges are visual icons on an ecommerce store, such as security seals, payment logos, and guarantee marks, that reassure shoppers their data is safe and the business is legitimate.UXTTFB (Time to First Byte)TTFB measures the time between requesting a page and receiving the first byte of the response from the server.PerformanceTTI (Time to Interactive)TTI measures the time from page load start until the page can reliably respond to user input within 50 milliseconds.PerformanceUGCUGC (user-generated content) is content made by customers rather than the brand, such as reviews, photos, videos, and social posts, that other shoppers use as social proof.MarketingUnique Selling PropositionA specific feature or benefit that makes a product stand out from competitors and gives customers a reason to buy.MarketingUnique Value PropositionA statement explaining what distinct benefit your product offers and why customers should choose you over competitors.CROUpsellA sales technique that encourages customers to purchase a higher-priced or upgraded version of their selected product.MerchandisingUrgencyUrgency is a psychological trigger that compels immediate action by creating time pressure through deadlines and countdown timers.PsychologyUser Experience (UX)The overall experience a user has while interacting with a website, including ease of use, efficiency, and satisfaction.UXUser Interface (UI)The visual elements users interact with on a website, including buttons, menus, forms, icons, and layout design.UXUTM ParametersUTM parameters are tags added to URLs that track traffic sources, helping identify which marketing campaigns drive visits and conversions.AnalyticsUX HeuristicsBroad rules of thumb for evaluating user interface design and identifying usability problemsUXVariable CostsBusiness expenses that change in direct proportion to sales volume, including product costs, shipping, and payment processing feesAnalyticsVisual HierarchyThe arrangement of design elements to show their order of importance, guide user attention, and direct focus to key actions.UXWebhookA webhook sends automated data to another application when a specific event occurs, enabling real-time updates without constant polling.TechnicalWebPWebP is a modern image format developed by Google that provides superior compression compared to JPEG and PNG while maintaining visual quality.PerformanceZero-Party DataInformation that customers intentionally and proactively share with a brand, such as preferences, purchase intentions, and personal contextAnalyticsZero-Result PageA zero-result page appears when site search returns no matching products, requiring thoughtful design to keep shoppers engaged.Search & Navigation
