E-Commerce and D2C Foundations

Introduction and Context

Electronic commerce (e-commerce) is the conduct of commercial activities through digitally enabled networks. Although online buying and selling are its most visible elements, e-commerce also includes digital product discovery, customer identification, payment, contracting, fulfillment, service, returns, data exchange, and relationship management. Direct-to-consumer (D2C) commerce is a related but distinct model in which a producer sells to and serves the end customer through channels it controls, rather than relying exclusively on wholesalers, distributors, retailers, or marketplaces.

For marketing managers, e-commerce is not simply a new retail channel. It changes the economics of market access, the speed of experimentation, the ownership of customer data, the structure of competition, and the design of customer experiences. A D2C firm may control its website, customer relationship, brand presentation, and first-party data, but it must also finance customer acquisition, technology, fulfillment, customer service, and compliance. Conversely, a marketplace can offer reach and trust at scale while controlling important aspects of visibility, transaction data, and commercial rules.

The strategic question is therefore not whether a firm should be “online.” It is how the firm should combine channels, capabilities, economics, and governance to create sustainable customer and enterprise value.

Learning Objectives

By the end of this chapter, students should be able to:

1. Define e-commerce, D2C, marketplace, omnichannel, social commerce, subscription commerce, and B2B e-commerce.
2. Explain the evolution of digital commerce and its major technological and organizational phases.
3. Compare the economics of owned channels, marketplaces, social platforms, and intermediated distribution.
4. Evaluate common e-commerce business models and their strategic trade-offs.
5. Apply basic unit-economic measures to an e-commerce decision.
6. Analyze how customer data, network effects, logistics, trust, and platform governance affect growth.
7. Identify ethical, regulatory, operational, and strategic risks in digital commerce.

1. Core Terminology

E-commerce and digital commerce

E-commerce refers specifically to commercial transactions enabled by electronic networks. Digital commerce is a broader term that includes e-commerce as well as digitally supported activities that may occur before, during, or after a transaction—for example, online research before an in-store purchase, digital customer service, product configuration, electronic invoicing, and data-enabled replenishment.

A useful customer journey is:

Awareness → discovery → evaluation → conversion → payment → fulfillment → use → service or return → retention and advocacy.

Digital technologies can influence every stage. Consequently, an organization can be a digital-commerce participant even when the final payment takes place offline.

Retail, D2C, and digitally native brands

Retail e-commerce involves the online sale of products or services to final users. D2C is a channel and relationship model: a manufacturer, producer, or brand sells directly to consumers through an owned website, application, physical store, messaging channel, or another controlled interface. A digitally native brand usually begins with digital customer acquisition and selling, but “digitally native” does not imply that the company must remain purely online.

D2C should not be confused with all online retail. A retailer selling another company’s products through its website is engaged in e-commerce but is not necessarily a D2C producer. Nor does a brand become D2C merely by opening a marketplace storefront if the marketplace controls the principal customer relationship and commercial rules.

Marketplace

A marketplace is a multi-sided platform that facilitates interaction between independent sellers and buyers. It may provide search, payments, identity verification, reviews, advertising, logistics, dispute resolution, and analytics. Examples include general marketplaces, specialized vertical marketplaces, app stores, accommodation platforms, and business procurement exchanges.

Marketplaces normally create value through aggregation and matching. They also impose rules concerning seller eligibility, ranking, commissions, pricing, data access, customer communication, and fulfillment. Their power derives partly from network effects: buyers make a marketplace more attractive to sellers, while sellers increase assortment and availability for buyers.

Subscription commerce

Subscription commerce uses recurring payments or recurring contractual relationships to provide continuing access, replenishment, membership, or curated products. Three common forms are:

• Replenishment: recurring delivery of predictable-use goods.
• Curation: periodic delivery of a selected assortment.
• Access or membership: continuing benefits such as content, shipping, discounts, or software access.

Subscriptions can improve demand predictability and retention, but they also create cancellation, inventory, service, and consumer-consent obligations. A subscription is valuable only when the continuing benefit exceeds perceived switching and cancellation costs.

Social commerce

Social commerce integrates product discovery, evaluation, interaction, and sometimes transaction within social or creator-oriented environments. It includes shoppable content, livestream selling, creator storefronts, conversational commerce, community recommendations, and social-platform checkout. Social commerce reduces the distance between inspiration and purchase, but it may increase dependence on platform algorithms and raise questions about disclosure, authenticity, persuasion, and data use.

Omnichannel commerce

Omnichannel commerce coordinates channels so that customers experience a coherent relationship across websites, applications, stores, marketplaces, call centers, social media, and service operations. It is more than offering many channels. A multichannel firm may operate channels independently; an omnichannel firm seeks integration of information, inventory, pricing logic, service history, identity, and customer experience.

Common capabilities include buy online, pick up in store; ship-from-store; store returns for online orders; unified loyalty; digital appointments; and consistent product information. Omnichannel design must balance customer convenience against inventory complexity, channel conflict, and measurement challenges.

B2B e-commerce

B2B e-commerce concerns transactions between organizations. It includes manufacturer-to-business sales, distributor portals, procurement marketplaces, electronic data interchange, wholesale ordering, and software-enabled purchasing. B2B buying usually involves multiple stakeholders, negotiated pricing, contracts, credit terms, technical specifications, approval workflows, and recurring orders.

B2B interfaces therefore cannot be designed as simplified versions of consumer stores. Important features may include account-specific catalogs, negotiated price lists, quotation requests, purchase-order processing, tax treatment, credit limits, inventory visibility, integration with enterprise-resource-planning systems, and role-based permissions.

2. Evolution of E-Commerce

The development of e-commerce can be understood in overlapping phases rather than as a linear replacement of one model by another.

Phase 1: Electronic transactions and information exchange

Early electronic commerce relied on electronic data interchange, electronic funds transfer, proprietary networks, and business databases. These systems improved the speed and reliability of structured exchanges between known organizations, especially in logistics, banking, travel, and procurement. Their limitations included high implementation costs, technical standards, and restricted access.

Phase 2: Web storefronts and electronic retail

The commercial web enabled firms to publish catalogs and accept orders through browsers. Early websites often reproduced catalog retail: product pages, shopping carts, and payment forms. The internet expanded geographic reach and reduced the cost of publishing information, but early firms faced low consumer trust, limited broadband, weak logistics visibility, and high payment friction.

Phase 3: Search, marketplaces, and scalable intermediation

Search engines and marketplaces changed product discovery. Instead of visiting a known retailer, consumers could compare sellers, prices, specifications, and reviews. Marketplaces reduced some forms of transaction uncertainty by providing identity systems, reputation mechanisms, payment protection, and standardized policies. At the same time, sellers became dependent on ranking systems, platform fees, and changing terms.

Phase 4: Mobile, social, and app-based commerce

Smartphones made commerce continuous, location-sensitive, and integrated with communication. Applications enabled persistent identity, push notifications, mobile wallets, personalization, and location-based services. Social platforms brought content, community, creators, and product discovery together. The customer journey became less linear: a user might encounter a product in a video, seek reviews in a community, visit a marketplace, and complete payment in an application.

Phase 5: Data-intensive, automated, and connected commerce

Modern commerce uses recommendation systems, demand forecasting, automated advertising, conversational interfaces, warehouse automation, digital payments, and connected devices. Artificial intelligence can support search, segmentation, product-content generation, service triage, fraud detection, and forecasting. However, automation does not remove the need for managerial judgment. Poor data, biased models, unclear accountability, and inappropriate personalization can damage trust and profitability.

The broad historical movement has been from transaction digitization toward relationship, ecosystem, and decision digitization. Competitive advantage increasingly depends on the integration of marketing, technology, operations, finance, and governance.

3. Platform Economics and the Logic of Intermediation

Value creation by platforms

A platform creates value by enabling interactions among distinct participant groups. A marketplace typically connects buyers, sellers, payment providers, logistics partners, advertisers, and sometimes developers. The platform’s core activities are participant acquisition, matching, trust creation, transaction enablement, and rule enforcement.

Platforms may earn revenue from commissions, listing or subscription fees, advertising, payment processing, logistics, data-enabled services, or premium tools. Some subsidize one participant group to attract another. For example, a platform may offer buyers low prices or free access while charging sellers for transactions and promotional visibility.

Network effects

A direct network effect occurs when the value of a service to one user increases as more users of the same type join—for example, communication among users. An indirect or cross-side network effect occurs when the participation of one group increases value for another group, as when more sellers increase assortment for buyers and more buyers increase potential demand for sellers.

Network effects are not automatically positive. Congestion, low-quality listings, fraud, irrelevant advertising, or poor service can reduce value as participation grows. Platforms must therefore manage quality, not merely maximize user numbers.

The platform flywheel

A common platform mechanism is:

More buyers → greater seller opportunity → more sellers and assortment → greater buyer value → more buyers.

This is a reinforcing loop, not a guaranteed outcome. It depends on liquidity—the probability that a participant finds a suitable match—along with trust, availability, price competitiveness, delivery performance, and search quality.

Multi-homing and switching costs

Participants may use several platforms simultaneously, a practice known as multi-homing. Sellers may list on several marketplaces, and consumers may buy through several applications. Multi-homing limits platform power, but exclusive tools, accumulated reviews, stored payment details, advertising data, integration costs, and loyalty benefits can create switching costs.

Platform strategy therefore involves a tension between openness and control. Openness attracts participants and variety; control protects quality, monetization, and the platform’s customer experience. Excessive control can provoke disintermediation or regulatory scrutiny, while excessive openness can produce fraud and declining trust.

4. E-Commerce and D2C Business Models

Owned-store D2C

In owned-store D2C, the brand controls the principal storefront, merchandising, customer communication, and often the customer data. Advantages include greater control over brand presentation, experimentation, pricing, first-party relationship data, and post-purchase service. Challenges include the cost of traffic acquisition, technology development, payment, fraud prevention, inventory, delivery, returns, and customer support.

D2C is not inherently more profitable than wholesale or marketplace selling. It changes the location of costs and margins. A brand may capture a higher gross selling price while incurring costs that intermediaries previously absorbed.

Marketplace selling

Marketplace selling provides access to existing demand, trusted payment, search traffic, reviews, and potentially fulfillment infrastructure. It is often useful for reach, product discovery, international entry, and testing demand. Its disadvantages include commissions, advertising expenses, competitive price transparency, limited customer access, policy dependence, counterfeit risk, and possible commoditization.

A balanced strategy may use marketplaces for acquisition and reach while using owned channels for retention, education, community, service, and high-value relationships—subject to contractual, legal, and customer-experience constraints.

Wholesale and retail partnerships

Traditional intermediaries contribute assortment, physical presence, local knowledge, financing, merchandising, and distribution. Their margin is not simply an avoidable cost; it compensates for activities and risks. D2C decisions should compare the total cost of replacing those activities, not only the wholesale price difference.

Subscription and membership models

Subscriptions can increase retention and forecastability. A basic cohort perspective is useful. Let N_t be the number of active subscribers at the beginning of period t, a_t the number acquired during the period, and c_t the number canceled. Then:

This identity assumes that subscribers are counted consistently and that acquisitions and cancellations are measured over the same period. If the cancellation rate is r_t = c_t ÷ N_t, then cancellations can be represented as c_t = r_t N_t when the rate is defined against beginning-period subscribers.

Subscription economics depend on acquisition cost, contribution margin, retention, service cost, payment costs, and involuntary churn. Firms should avoid presenting indefinite customer lifetime values when retention assumptions are unstable or when the customer relationship is not genuinely recurring.

Social and creator-led commerce

Social commerce can reduce discovery costs by using entertainment, recommendation, identity, and community. Creators may provide demonstration, credibility, or cultural relevance. The model is vulnerable to algorithmic volatility, creator-brand misalignment, undisclosed sponsorship, platform dependency, and short-lived demand spikes. Effective governance requires clear commercial disclosures, product claims controls, rights management, and monitoring of customer service obligations.

Omnichannel model

Omnichannel models use stores, websites, applications, marketplaces, and service channels as parts of an integrated system. A store may serve as a showroom, pickup point, return location, fulfillment node, or service center. The economic benefit comes from improved convenience, inventory utilization, and retention; the cost comes from systems integration, operational complexity, employee training, and channel attribution disputes.

B2B digital commerce

B2B models include self-service ordering, account-based portals, digital marketplaces, sales-assisted commerce, electronic procurement, and hybrid models. Digital self-service is most appropriate where products, prices, and processes are sufficiently standardized. Complex or high-risk purchases may require sales engineering, negotiation, implementation support, or contractual governance.

5. Unit Economics and Managerial Decision-Making

Unit economics examines the revenue and variable costs associated with a defined unit, such as an order, customer, subscriber, or product transaction. The unit must be defined explicitly; otherwise comparisons become misleading.

For an order, contribution margin can be expressed as:

The formula applies when the listed costs vary sufficiently with orders and are measured on a consistent basis. Fixed salaries, rent, and general technology costs are not included unless the analysis explicitly allocates them. Revenue should be net of discounts, refunds, and taxes collected on behalf of governments where appropriate.

A simple customer-acquisition payback measure is:

This is an approximation. It assumes relatively stable contribution margin and acquisition cost, and it ignores discounting, churn timing, working capital, and variability. It should not be interpreted as customer lifetime value.

Worked example: owned D2C versus marketplace

An illustrative brand sells a product for $80 through its own website. Product cost is $28, fulfillment is $8, payment cost is $2.40, expected return and service cost is $4, and variable marketing cost allocated to the order is $18. The contribution margin is:

$80 − $28 − $8 − $2.40 − $4 − $18 = $19.60.

The same product sells through a marketplace for $80. The marketplace commission is 15 percent, or $12; marketplace advertising is $6; product cost is $28; marketplace fulfillment is $10; payment is included in the commission; and expected service and returns cost is $4. Contribution margin is:

$80 − $12 − $6 − $28 − $10 − $4 = $20.00.

The marketplace produces a slightly higher contribution in this specific example, despite the commission. The result does not establish that marketplaces are superior: the calculation excludes differences in repeat purchase, data access, brand equity, policy risk, and future acquisition cost. If the D2C customer makes repeat purchases at low incremental cost, the longer-term D2C relationship may be more valuable.

6. Customer Data, Measurement, and Growth

E-commerce generates behavioral, transactional, operational, and relationship data. Important categories include product views, search terms, add-to-cart events, orders, refunds, delivery performance, service contacts, consent status, and customer feedback. Managers should distinguish first-party data collected through a direct relationship from data made available by an intermediary under contractual and technical restrictions.

A conversion rate is commonly calculated as:

The denominator must be specified. Sessions, unique visitors, product-detail views, and qualified leads produce different measures. Conversion rate alone cannot diagnose performance: a higher rate may result from lower traffic quality, restricted assortment, aggressive discounts, or measurement changes.

Growth hacking should be understood as disciplined experimentation rather than a collection of tricks. A credible experiment specifies a target behavior, treatment, control or comparison condition, success metric, time window, eligibility rule, and guardrail metrics. Examples of guardrails include refund rate, complaint rate, delivery delay, margin, unsubscribe rate, and customer trust indicators. A statistically detectable change is not necessarily commercially meaningful, and short-term conversion gains can damage retention or contribution margin.

AI can support experimentation, recommendation, forecasting, customer service, and content operations. Managers must validate training data, monitor disparate performance, protect confidential information, disclose material automation where required, and retain human accountability for consequential decisions.

7. Operations, Trust, and the Customer Experience

Digital demand must be converted into reliable physical or digital delivery. Key operational components include assortment planning, inventory accuracy, order management, warehouse processing, carrier selection, delivery promises, returns, refunds, and service recovery. Marketing promises create operational obligations. A campaign that increases orders beyond fulfillment capacity can reduce long-term value through late delivery, complaints, and negative reviews.

Trust is built through accurate information, secure payment, transparent prices, dependable delivery, fair returns, authentic reviews, privacy protection, and effective dispute resolution. Reviews are useful social signals but can be manipulated. Platforms and brands need controls for fake reviews, counterfeit goods, unsafe products, misleading claims, and seller misconduct.

Returns present a particularly important trade-off. A generous policy can reduce purchase anxiety and increase conversion, but it also creates reverse-logistics cost, inventory uncertainty, waste, and potential abuse. Policies should be clear, legally compliant, proportionate to product risk, and supported by accurate product information.

8. Regulatory, Ethical, and Governance Issues

E-commerce governance varies by jurisdiction, but several recurring principles are widely relevant:

• Consumer protection: prices, material terms, product claims, delivery commitments, cancellation rights, and refund policies should not be deceptive or unfair.
• Privacy and data protection: organizations should define lawful purposes, limit collection, secure personal data, respect individual rights, and control vendors and cross-border transfers as required by applicable law.
• Marketing consent: email, messaging, cookies, behavioral advertising, and automated contact may require notice, consent, opt-out mechanisms, or other legal bases.
• Competition and platform fairness: ranking, self-preferencing, access restrictions, exclusivity, and use of seller data may attract competition-law scrutiny.
• Accessibility and inclusion: digital services should be usable by people with disabilities and should not systematically exclude groups through design, payment, language, or delivery practices.
• Product safety and authenticity: sellers and platforms must address unsafe, counterfeit, recalled, or misrepresented products.
• Algorithmic accountability: personalization, fraud scoring, credit decisions, and content moderation require testing, explainability appropriate to the context, monitoring, and appeal processes.

Ethical marketing extends beyond legal compliance. Dark patterns—interfaces that manipulate users into unwanted purchases, subscriptions, data sharing, or consent—can produce short-term conversion but weaken autonomy and trust. Sustainable commerce also requires attention to packaging, delivery emissions, returns, labor conditions, repairability, and the environmental effects of rapid consumption.

9. Applied Case: Northstar Home, an Illustrative Scenario

Background

Northstar Home is an illustrative mid-sized manufacturer of home-organizing products. It has historically sold through national retailers. Its leadership is considering an owned D2C website, a major marketplace presence, and a replenishment subscription for selected consumable products.

Problem

Retail partners provide substantial reach but limited access to end-customer behavior. Management wants better product feedback and stronger retention without damaging retailer relationships. The finance team is concerned that D2C growth will increase fulfillment and customer-service costs.

Analysis

The team maps the value chain and identifies four distinct objectives: reach new customers, learn from users, generate repeat purchases, and protect contribution margin. It rejects the assumption that one channel must perform all four functions. Marketplace listings can provide discovery and demand capture; the owned site can provide education, bundles, registration, service, and product feedback; retail stores can support physical trial and immediate availability.

The team defines an order-level contribution measure and separates first-order acquisition economics from repeat-order economics. It also identifies operational constraints: limited warehouse capacity, inconsistent product data, and a return process designed for wholesale rather than individual parcels.

Approach and solution

Northstar launches a controlled pilot in one product category. It improves product specifications and imagery, establishes a transparent return policy, and integrates order, service, and inventory systems. Marketplace advertising is capped by contribution margin. The owned site emphasizes how-to content, product registration, replacement parts, and complementary bundles rather than simply undercutting retail prices.

The subscription is introduced only for products with predictable replenishment. Customers receive clear renewal notices, easy cancellation, and the ability to change delivery frequency. The company tests packaging and delivery promises before scaling paid media.

Outcome

In the first phase, marketplace sales deliver efficient reach but limited customer insight. The owned site produces fewer first orders but better access to feedback and stronger cross-selling among registered customers. The subscription attracts a smaller segment than forecast but shows higher repeat purchase among customers with genuine replenishment needs. Northstar postpones broad subscription expansion and invests instead in product education, inventory accuracy, and service integration.

Learning points

1. Channel choice should follow strategic objectives rather than ideology.
2. Higher revenue is not equivalent to higher contribution or customer value.
3. D2C requires operational capabilities, not only a storefront.
4. Subscription models should solve a recurring customer problem.
5. Marketplaces can be useful acquisition partners while creating dependency risks.
6. Pilots should include economic, operational, customer, and governance metrics.

10. Strategic Synthesis and Best Practices

A robust e-commerce strategy begins with customer need and value proposition, not technology selection. Managers should:

1. Define the target customer, job to be done, and reason to buy digitally.
2. Choose the unit of analysis—order, customer, cohort, subscriber, or account.
3. Map channel roles and identify conflict, cannibalization, and complementarity.
4. Calculate contribution economics using transparent, consistent cost definitions.
5. Design fulfillment, returns, service, and data governance before scaling acquisition.
6. Build owned capabilities where learning, retention, or differentiation matters.
7. Use platforms for reach while assessing fees, ranking dependence, data restrictions, and policy risk.
8. Experiment with control conditions and guardrail metrics.
9. Treat consent, accessibility, privacy, fairness, and product safety as design requirements.
10. Review strategy through cohorts and customer behavior rather than aggregate sales alone.

The central managerial insight is that e-commerce is an integrated system. Marketing creates demand, platforms shape access, technology enables interaction, operations deliver the promise, finance evaluates the economics, and governance protects legitimacy. Sustainable D2C growth occurs when these elements reinforce one another.

Chapter Summary

E-commerce encompasses digitally enabled commercial transactions and the broader customer, operational, and data processes surrounding them. D2C is a relationship and channel model in which producers sell directly to end customers through controlled interfaces. Marketplaces create value by matching multiple participant groups and often benefit from cross-side network effects, but they also impose fees, rules, and dependency risks.

Subscription, social, omnichannel, and B2B models address different customer and operating conditions. Subscription commerce depends on genuine recurring value; social commerce combines discovery and interaction; omnichannel commerce coordinates channels; and B2B commerce requires account, contract, workflow, and integration capabilities. Platform economics explains matching, liquidity, network effects, multi-homing, switching costs, and governance.

D2C does not automatically produce superior economics. Managers must compare contribution margins, acquisition costs, retention, service, fulfillment, data access, and strategic control. Growth experimentation should use explicit metrics, comparison conditions, and guardrails. Finally, trust, privacy, consumer protection, accessibility, product safety, algorithmic accountability, and sustainability are essential components of professional digital-commerce management.

Key Terms

E-commerce: Commercial activity enabled by electronic networks.

Digital commerce: E-commerce plus digitally enabled activities across the customer and operating journey.

Direct-to-consumer (D2C): A producer’s direct sale and relationship with the end customer.

Marketplace: A platform that facilitates transactions between independent buyers and sellers.

Platform: An intermediary system that enables interactions among distinct participant groups.

Network effect: A change in user value resulting from changes in participation by users or participant groups.

Liquidity: The probability that a platform participant can find a suitable match.

Multi-homing: Use of multiple platforms by the same participant.

Switching cost: Cost or disadvantage associated with moving to another provider or platform.

Subscription commerce: Recurring commercial access, delivery, replenishment, or membership.

Social commerce: Commerce integrated with social interaction, content, creators, or communities.

Omnichannel commerce: Coordinated customer experience and operations across channels.

B2B e-commerce: Digital commerce between organizations.

First-party data: Data collected directly by an organization through its relationship with users or customers.

Unit economics: Analysis of revenue and variable costs for a defined commercial unit.

Contribution margin: Revenue remaining after specified variable costs.

Customer acquisition cost: Marketing and selling cost attributed to acquiring a customer.

Churn: Loss or cancellation of customers or subscribers.

Dark pattern: Interface design that manipulates users toward unintended actions.

Cross-side network effect: Increased value for one participant group resulting from participation by another group.

Review Questions

5 Short Answer Questions

1. Distinguish e-commerce from digital commerce.
2. What makes a business D2C rather than merely an online retailer?
3. Explain one direct and one cross-side network effect.
4. Identify three features that commonly distinguish B2B from B2C e-commerce.
5. Why is contribution margin useful in evaluating channels?

5 Long Answer Questions

1. Compare owned D2C, marketplace, wholesale, and omnichannel models, including their strategic advantages and risks.
2. Explain how platform governance influences trust, competition, seller participation, and customer value.
3. Discuss the evolution of e-commerce from electronic data exchange to AI-supported commerce.
4. Evaluate the claim that D2C always produces higher profitability than intermediary distribution.
5. Explain the ethical and regulatory responsibilities of an e-commerce platform using personalization and automated decision systems.

3 Analytical / Application Questions

1. A brand is considering a marketplace with a 15% commission. Design a contribution-margin analysis that includes product, fulfillment, payment, advertising, returns, and service costs. State which costs should and should not be included and justify your choices.
2. Design a controlled experiment to test whether free delivery increases profitable orders. Specify the treatment, comparison group, primary metric, sample eligibility, duration, and at least three guardrail metrics.
3. Using the Northstar Home scenario, recommend a channel portfolio for acquisition, retention, learning, and fulfillment. Explain likely channel conflict and propose governance mechanisms to manage it.

Multiple Choice Questions with Answers

Question 1

Which statement best defines direct-to-consumer commerce?

A. A manufacturer sells only through independent retailers.

B. A producer sells to and serves end customers through a controlled channel.

C. A marketplace sells products without independent sellers.

D. A wholesaler distributes products to organizational buyers.

Correct Answer: B. A producer sells to and serves end customers through a controlled channel.

Question 2

What is the principal economic function of a marketplace?

A. To manufacture every product listed on the platform.

B. To eliminate all competition among sellers.

C. To facilitate matching and transactions between participant groups.

D. To guarantee that every seller earns a profit.

Correct Answer: C. To facilitate matching and transactions between participant groups.

Question 3

Which is an example of a cross-side network effect?

A. A messaging service becomes more useful as one user adds contacts.

B. More sellers increase assortment and potential value for marketplace buyers.

C. A warehouse becomes less efficient as walking distance increases.

D. A customer receives a discount after buying twice.

Correct Answer: B. More sellers increase assortment and potential value for marketplace buyers.

Question 4

Which feature is most characteristic of B2B e-commerce?

A. Account-specific pricing and purchase-approval workflows.

B. Anonymous browsing with no account information.

C. Only impulse purchases through social video.

D. Mandatory one-time payment for every customer.

Correct Answer: A. Account-specific pricing and purchase-approval workflows.

Question 5

A product sells for $80. Variable costs are $28 for product, $8 for fulfillment, $2.40 for payment, $4 for returns and service, and $18 for marketing. What is the contribution margin?

A. $11.60

B. $19.60

C. $27.60

D. $60.40

Correct Answer: B. $19.60

Question 6

Which statement about omnichannel commerce is most accurate?

A. It means operating several completely independent channels.

B. It requires selling only through physical stores and websites.

C. It coordinates channels to create a coherent customer and operating experience.

D. It eliminates the need for inventory management.

Correct Answer: C. It coordinates channels to create a coherent customer and operating experience.

Question 7

If beginning subscribers are 1,000, acquisitions are 150, and cancellations are 80, what is the next-period subscriber count under N_t+1 = N_t + a_t − c_t?

A. 770

B. 920

C. 1,070

D. 1,230

Correct Answer: C. 1,070

Question 8

Which practice is most consistent with responsible e-commerce experimentation?

A. Optimizing only immediate conversion regardless of complaints.

B. Changing several variables without recording the treatment.

C. Using a comparison condition and monitoring margin and refund guardrails.

D. Excluding customers who experience service failures from all analysis.

Correct Answer: C. Using a comparison condition and monitoring margin and refund guardrails.

Question 9

What is a major strategic risk of relying heavily on a marketplace?

A. The firm automatically owns all marketplace customer data.

B. The firm may become dependent on platform fees, rankings, and policy changes.

C. The firm cannot reach any new customers.

D. The marketplace guarantees permanent product differentiation.

Correct Answer: B. The firm may become dependent on platform fees, rankings, and policy changes.

Question 10

Which practice is an example of a dark pattern?

A. Providing a clear cancellation button beside subscription terms.

B. Displaying delivery dates before payment.

C. Using confusing interface steps to steer users into an unwanted subscription.

D. Offering accessible product descriptions.

Correct Answer: C. Using confusing interface steps to steer users into an unwanted subscription.