E-Commerce and M-Commerce: Models, Payments and PYQs
Exam notes on e-commerce and m-commerce: B2B, B2C, C2C and C2B models, payment gateways and UPI, GeM and ONDC, the IT Act 2000 and online security.
By GK24 Editorial Team· Published · 5 min read

E-commerce means buying and selling goods, services and information over computer networks, with the order, the payment and often the delivery arranged electronically. M-commerce, short for mobile commerce, is the branch of it carried out on wireless handheld devices such as smartphones, tablets and feature phones. Examiners treat the pair as a vocabulary chapter: the four business models, the payment systems used in India, the government platforms and the law that governs online trade. Learn each term with one Indian example and the one-mark questions become routine.
From EDI to the smartphone
Electronic trade is older than the web. Large firms exchanged purchase orders and invoices through Electronic Data Interchange (EDI) from the 1960s, and the British entrepreneur Michael Aldrich demonstrated online shopping over a telephone line in 1979. The commercial web then opened the field: Amazon began selling books in 1995 after being founded by Jeff Bezos in 1994, eBay was started by Pierre Omidyar in 1995, and in India Flipkart was founded in 2007 by Sachin Bansal and Binny Bansal. The term m-commerce is credited to Kevin Duffey in 1997, who described it as putting electronic commerce directly into the customer's hand through wireless technology.
The business models of e-commerce
Models are named by who sells to whom, and this is the single most asked part of the chapter.
| Model | Who deals with whom | Example |
|---|---|---|
| B2B | Business to business | IndiaMART, Alibaba, a factory buying raw material online |
| B2C | Business to consumer | Amazon, Flipkart, an airline website |
| C2C | Consumer to consumer | OLX, Quikr, eBay classifieds |
| C2B | Consumer to business | A freelancer or photographer selling work to a firm |
| B2G / G2B | Business and government | Government e-Marketplace, e-tender portals |
| G2C | Government to citizen | IRCTC ticketing, online passport and tax services |
| B2E | Business to employee | An internal portal for staff claims and training |
| D2C | Direct to consumer | A brand selling from its own website, without a marketplace |
Two further words divide the marketplaces themselves. In the marketplace model the platform only brings buyer and seller together and earns a commission, holding no stock of its own; in the inventory model the platform owns the goods and sells them. The distinction matters in policy because India allows full foreign direct investment through the automatic route in the marketplace model of e-commerce but not in the inventory-based model of business-to-consumer selling.
How an online payment travels
When a customer clicks 'pay', the details go to a payment gateway, which encrypts them and passes them to a payment aggregator and then through the card network or the banking channel to the issuing bank, which approves or declines. Authentication in India normally adds a second factor, usually a one-time password, and the merchant never needs to store the card number itself because card details are replaced by a substitute value in a process called tokenisation. The card industry's own security standard for anyone handling card data is PCI DSS, the Payment Card Industry Data Security Standard.
The instruments a student should be able to name are the Unified Payments Interface (UPI), launched by the National Payments Corporation of India in 2016 and used through apps including BHIM, which was released the same year; the bank transfer channels NEFT, RTGS and IMPS; the RuPay card network; prepaid payment instruments, which is the regulatory name for mobile wallets; the Aadhaar Enabled Payment System (AEPS); and the USSD service reached by dialling *99#, which works on a feature phone without the internet. NPCI itself was set up in 2008 as the umbrella organisation for retail payments in the country.
What m-commerce adds
M-commerce is not merely e-commerce on a smaller screen. The device is personal, is carried everywhere and knows where it is, so it supports services a desktop cannot: location-based offers and hyperlocal delivery, mobile ticketing with a QR code shown at the gate, contactless tap payments over NFC, in-app purchases, push notifications, mobile banking, and scan-and-pay at a shop counter. Its limits are equally examinable: small screens, battery and bandwidth, and higher exposure to loss, theft and malicious apps.
Government platforms and e-governance
Several public platforms are themselves e-commerce systems. The Government e-Marketplace, launched in 2016, is the portal through which government departments buy goods and services. The Open Network for Digital Commerce (ONDC), an initiative of the Department for Promotion of Industry and Internal Trade, is an open protocol meant to let buyers on one app find sellers on another instead of locking each seller into a single platform. The National Agriculture Market, e-NAM, launched in 2016, links regulated mandis so that farmers can sell beyond their own yard, and IRCTC runs one of the largest ticketing operations in the world.
Law, consumer rights and security
The Information Technology Act, 2000 is the foundation: it gave legal recognition to electronic records and to digital signatures, which is what makes an online contract enforceable, and it carries the offences of identity theft and cheating by personation that online fraud is charged under. The Consumer Protection (E-Commerce) Rules, 2020, framed under the Consumer Protection Act, 2019, require a platform to display the seller's details and the country of origin of goods, to run a grievance redressal mechanism and to refrain from flash sales designed to mislead. On the technical side, a shopper should look for HTTPS, which means the page is protected by SSL or its successor TLS, and should treat phishing e-mails, lookalike apps and public Wi-Fi payments as the standard dangers.
Exam Point of View
Questions from this chapter are almost all one-liners: identify the model from a situation (two individuals trading means C2C), expand an abbreviation (EDI, UPI, ONDC, GeM, PPI, AEPS, PCI DSS), name the launching body of UPI or GeM, or say which Act validated electronic records. Banking papers favour the payment side, so be exact about who regulates and who operates, since RBI regulates while NPCI operates UPI, RuPay and IMPS. SSC and Railway papers favour the models and the security terms such as HTTPS, SSL, OTP, phishing and tokenisation. The standard traps are C2B against B2C, GeM against ONDC, and the marketplace model against the inventory model in the FDI rule.
Important Facts
| E-commerce | Buying and selling of goods, services and information over computer networks |
|---|---|
| M-commerce | E-commerce on wireless handheld devices; term credited to Kevin Duffey, 1997 |
| EDI | Electronic Data Interchange, standard electronic exchange of business documents, in use from the 1960s |
| UPI | Launched by NPCI in 2016; BHIM app released the same year |
| NPCI | National Payments Corporation of India, set up in 2008 for retail payments |
| GeM | Government e-Marketplace, launched 2016, for government procurement (B2G) |
| ONDC | Open Network for Digital Commerce, an initiative of DPIIT |
| e-NAM | National Agriculture Market, launched 2016, linking regulated mandis online |
| Basic law | Information Technology Act, 2000; electronic records and digital signatures recognised |
| Consumer rules | Consumer Protection (E-Commerce) Rules, 2020, under the Consumer Protection Act, 2019 |
| Card security standard | PCI DSS, the Payment Card Industry Data Security Standard |
| Secure page | HTTPS, protected by SSL or its successor TLS, shown by the padlock icon |
| USSD payments | *99# service, works on a feature phone without the internet |
| Amazon and Flipkart | Amazon founded 1994 by Jeff Bezos; Flipkart founded 2007 by Sachin and Binny Bansal |
Practice MCQs on this topic
Auctions or dynamic pricing markets are examples of
- A.B2B commerce
- B.C2B commerce
- C.C2C commerce
- D.Both A and C
Show answer
Explanation
The correct answer is D, both A and C. In an auction the price is not fixed by the seller but is discovered from what buyers are willing to bid, and this way of trading appears at two levels. Between businesses, industrial exchanges and procurement portals run reverse auctions and dynamic pricing for bulk material, which is B2B commerce, so option A is part of the answer. Between individuals, classified and auction platforms let one consumer bid for goods another consumer is selling, which is C2C commerce, so option C is also part of the answer. Option B, C2B commerce, is where an individual supplies a service or content to a firm, as a freelancer or a stock photographer does, and the price there is normally negotiated rather than auctioned. Because both the business-to-business and the consumer-to-consumer levels fit, the combined option D is right.
A person selling a used motorcycle to another individual through an online classifieds platform is an example of which e-commerce model?
- A.B2B
- B.B2C
- C.C2C
- D.G2C
Show answer
Explanation
The correct answer is C, C2C, which stands for consumer to consumer. Here both sides of the deal are individuals and the website only provides the listing, the search and sometimes the payment and dispute machinery, earning a fee or advertising revenue rather than a trading margin. Classified and auction platforms such as OLX, Quikr and eBay's classifieds are the standard examples. Option A, B2B or business to business, covers trade between firms, as on IndiaMART or Alibaba, where a manufacturer buys raw material or components. Option B, B2C or business to consumer, is the familiar retail model in which a company sells directly to the shopper, as Amazon and Flipkart do. Option D, G2C or government to citizen, covers public services delivered online, such as railway ticketing through IRCTC or an online passport application. Identify the model by naming the two parties first, then matching the letters.
The Unified Payments Interface (UPI) was launched in 2016 by which organisation?
- A.Reserve Bank of India
- B.National Payments Corporation of India
- C.State Bank of India
- D.Securities and Exchange Board of India
Show answer
Explanation
The correct answer is B, the National Payments Corporation of India. NPCI, set up in 2008 as the umbrella organisation for retail payments in the country, built and runs UPI, which lets a user link several bank accounts to one mobile application and transfer money instantly using a virtual payment address, without sharing account numbers. NPCI also operates RuPay, IMPS, AEPS, the *99# USSD service and the BHIM application released in 2016. Option A, the Reserve Bank of India, is the regulator that authorised and oversees NPCI and the payment systems, but it does not operate UPI itself; the distinction between regulating and operating is the trap in this question. Option C, the State Bank of India, is only one of the member banks on the network. Option D, SEBI, regulates the securities market and has no role in retail payments. Remember the pairing: RBI regulates, NPCI operates.
Which of the following best describes m-commerce?
- A.Commercial transactions carried out through wireless handheld devices
- B.Exchange of business documents in a standard electronic format
- C.Trade between two government departments
- D.Advertising of products on television
Show answer
Explanation
The correct answer is A, commercial transactions carried out through wireless handheld devices. M-commerce, or mobile commerce, is the part of electronic commerce conducted on smartphones, tablets and even feature phones over a wireless network, and the term is credited to Kevin Duffey in 1997. Because the device is personal, portable and location-aware, m-commerce supports mobile banking, mobile ticketing with a QR code, scan-and-pay at a counter, contactless NFC payment, hyperlocal delivery and in-app purchase. Option B describes Electronic Data Interchange, or EDI, the older standard by which firms exchange purchase orders and invoices between their computer systems. Option C is government to government dealing, usually written G2G, which is part of e-governance rather than of mobile commerce. Option D is simply advertising through a mass medium, with no electronic transaction at all, and advertising is only one activity that may support commerce.
The 's' in the HTTPS address of a shopping website indicates that the connection is secured by which technology?
- A.SSL or TLS encryption
- B.Simple Mail Transfer Protocol
- C.Static IP addressing
- D.Structured Query Language
Show answer
Explanation
The correct answer is A, SSL or TLS encryption. HTTPS is HTTP carried inside a protected channel: the browser and the server first exchange a digital certificate and agree on keys, after which card numbers, passwords and addresses travel as cipher text that an eavesdropper on the network cannot read. The older protocol was Secure Sockets Layer (SSL) and the current one is Transport Layer Security (TLS), which is why both names appear in textbooks and why the padlock icon is shown in the address bar. Option B, SMTP, is the protocol that carries outgoing e-mail and has nothing to do with web security. Option C, static IP addressing, merely means a device keeps a fixed network address; it does not encrypt anything. Option D, SQL, is the language used to query databases, and a careless implementation of it is itself a security weakness known as SQL injection. For an online payment, HTTPS plus a one-time password is the minimum a shopper should expect.
The Government e-Marketplace (GeM) portal, launched in 2016, is used mainly for:
- A.Filing income tax returns
- B.Public procurement of goods and services by government buyers
- C.Booking railway tickets
- D.Registering a new company
Show answer
Explanation
The correct answer is B, public procurement of goods and services by government buyers. GeM is an online marketplace on which central and state government departments, public sector undertakings and other public bodies buy common-use goods and services from registered sellers, with the aim of making purchase faster, cheaper and transparent. In the vocabulary of the chapter it is a business-to-government, or B2G, platform, and it also carries features that reserve part of the demand for small enterprises and women-led units. Option A is wrong because income tax returns are filed on the income tax department's own e-filing portal. Option C describes IRCTC, which is a government-to-citizen service for railway ticketing. Option D, company registration, is done through the corporate affairs ministry's MCA portal. Keep GeM distinct from ONDC: GeM is a government buying platform, while ONDC is an open protocol meant to connect buyers and sellers across different private applications.
IndiaMART, on which manufacturers and wholesalers trade with each other, is an example of which model?
- A.B2C
- B.B2B
- C.C2B
- D.B2E
Show answer
Explanation
The correct answer is B, B2B, business to business. On such a platform both the buyer and the seller are enterprises: a factory sources raw material, components, machinery or packaging from suppliers, and the orders are usually bulk orders with negotiated prices, credit terms and long-term supply contracts. Alibaba is the best known international example and IndiaMART and TradeIndia are Indian ones. Option A, B2C, is retail selling by a firm to an individual shopper, as on Amazon or Flipkart, where quantities are small and the price is displayed and fixed. Option C, C2B, reverses the usual direction: an individual supplies a service or content to a business, as a freelance designer, consultant or stock photographer does. Option D, B2E, business to employee, is an internal system through which an organisation serves its own staff, for instance a portal for leave, claims or training. The volume of B2B trade worldwide is far larger than that of B2C, a fact papers sometimes test directly.
Which Indian law first gave legal recognition to electronic records and digital signatures, making online contracts enforceable?
- A.The Indian Contract Act, 1872
- B.The Information Technology Act, 2000
- C.The Consumer Protection Act, 2019
- D.The Competition Act, 2002
Show answer
Explanation
The correct answer is B, the Information Technology Act, 2000. This Act is the legal foundation of electronic commerce in India: it recognised electronic records as equivalent to paper records, gave digital and later electronic signatures the status of a signature, provided for certifying authorities, and created the offences under which online fraud such as identity theft and cheating by personation is charged. Without that recognition a contract formed by clicking a button on a website would be difficult to enforce. Option A, the Indian Contract Act, 1872, still supplies the general law of offer, acceptance and consideration, but it predates computers and says nothing about electronic form. Option C, the Consumer Protection Act, 2019, matters a great deal to online shoppers and is the parent of the Consumer Protection (E-Commerce) Rules, 2020, yet it governs unfair trade practices and redressal, not the validity of electronic records. Option D, the Competition Act, 2002, deals with anti-competitive agreements and abuse of dominance.
In the context of electronic commerce, EDI stands for:
- A.Electronic Data Interchange
- B.Electronic Digital Invoice
- C.Encrypted Delivery Interface
- D.Electronic Direct Import
Show answer
Explanation
The correct answer is A, Electronic Data Interchange. EDI is the computer-to-computer exchange of standard business documents such as purchase orders, invoices, despatch advices and payment instructions, in an agreed format, without paper and without a person re-typing the data at the other end. Large firms and their suppliers have used it since the 1960s and 1970s, which is why EDI is treated as the ancestor of modern e-commerce; the standards usually quoted are ANSI X12 and the international EDIFACT. Its advantages are speed, lower cost and the removal of typing errors, and its drawback was the expense of the private networks it originally needed. Options B, C and D are invented expansions of the same three letters, the usual way abbreviation questions are set, and none of them is a recognised term in commerce or computing. Learn EDI along with the other abbreviations of this chapter: UPI, NPCI, ONDC, GeM, PCI DSS, PPI, AEPS and USSD.
ONDC, an initiative of the Department for Promotion of Industry and Internal Trade, stands for:
- A.Online National Digital Commission
- B.Open Network for Digital Commerce
- C.Official Network of Domestic Commerce
- D.Open National Data Corridor
Show answer
Explanation
The correct answer is B, Open Network for Digital Commerce. ONDC is not an application or a marketplace but a set of open protocols, in the same spirit as UPI in payments, designed so that a buyer using one application can discover and order from a seller registered on a different application. The purpose is to break the lock-in of a platform, in which a seller must join each marketplace separately and accept its terms, and to bring small shopkeepers, artisans and local retailers into online trade at low cost. It is promoted by the Department for Promotion of Industry and Internal Trade under the commerce ministry, was incorporated as a private non-profit company and moved from a pilot into wider use in phases. Options A, C and D are invented expansions. Keep the three platform names separate for the exam: UPI for payments, ONDC for commerce discovery and GeM for government procurement.
Frequently Asked Questions
What is the difference between e-commerce and m-commerce?
E-commerce is any commercial transaction carried out over computer networks, on a desktop, laptop or handheld device. M-commerce is the subset done on wireless handheld devices such as smartphones and tablets. Because the handheld device is personal and knows its location, m-commerce adds services such as scan-and-pay, mobile ticketing, hyperlocal delivery and location-based offers.
What are the main models of e-commerce?
The four core models are B2B, business to business, as on IndiaMART; B2C, business to consumer, as on Amazon or Flipkart; C2C, consumer to consumer, as on OLX; and C2B, consumer to business, where an individual sells a service or content to a firm. Government variants are B2G, G2B and G2C, and firms also run B2E portals for their own employees.
Who launched UPI and in which year?
The Unified Payments Interface was launched by the National Payments Corporation of India in 2016, with the Reserve Bank of India as the regulator of the payment system rather than its operator. UPI lets a user link several bank accounts to one application and send money instantly using a virtual payment address, and the BHIM application was released in the same year.
What is the difference between a marketplace model and an inventory model?
In a marketplace model the platform only connects buyers and sellers and earns a commission, holding no stock of its own. In an inventory model the platform owns the goods it sells. The distinction matters for policy because India permits full foreign direct investment through the automatic route in the marketplace model of e-commerce but not in the inventory-based model of selling to consumers.
Which law governs online contracts in India?
The Information Technology Act, 2000 is the base, since it gave legal recognition to electronic records and to digital signatures and so made a contract formed online enforceable. Consumer rights on shopping platforms are governed by the Consumer Protection Act, 2019 together with the Consumer Protection (E-Commerce) Rules, 2020, which require disclosure of seller details and country of origin.
What is tokenisation in online payments?
Tokenisation replaces a card number stored by a merchant or an application with a substitute value, called a token, which is useless to anyone who steals it because it works only for that merchant and that device. The real card number stays with the card network and the bank, so a data breach at a shopping website no longer exposes usable card details.
Sources
- Unified Payments Interface: Product Overview — National Payments Corporation of India
- The Information Technology Act, 2000 — Ministry of Electronics and Information Technology, Government of India
- Government e-Marketplace — Ministry of Commerce and Industry, Government of India
- Consumer Protection (E-Commerce) Rules, 2020 — Department of Consumer Affairs, Government of India





