What you will learn

• E-commerce types
• E-commerce vs e-business
• Infrastructure
• Site components
• Payment systems (UPI
• Cards
• Wallets
• EFT)
• Payment gateways
• EBPP
• Security threats
• Encryption
• SSL/TLS
• Firewalls
• IDS/IPS
• PKI

Course content (21 lessons)

1. Course Introduction: E-Commerce — Course Introduction: E-Commerce E-Commerce is the buying, selling, and exchange of goods, services and information over electronic networks — primarily the Internet . From a ₹100…
2. 1.0 Unit 1 Overview: Introduction, Types & Infrastructure — Unit I — Overview: Introduction, Types & Infrastructure Unit I lays the conceptual foundation: 1. What is e-commerce? — Definition, evolution, e-commerce vs e-business 2. What…
3. 1.1 Definition, Evolution & E-Commerce vs E-Business — 1.1 Definition, Evolution & E-Commerce vs E-Business Definition of E-Commerce Laudon's definition (IPU textbook): "E-commerce is the use of the Internet, the Web and mobile apps…
4. 1.2 Unique Features, Advantages, Disadvantages & Applications — 1.2 Unique Features, Advantages, Disadvantages & Applications of E-Commerce The 8 Unique Features of E-Commerce (Laudon) Kenneth Laudon (the IPU textbook author) defines eight…
5. 1.3 Types of E-Commerce — B2B, B2C, C2C, M-commerce, Social — 1.3 Types of E-Commerce E-commerce is classified by the type of parties involved in the transaction. The IPU syllabus mentions five core types — B2B, B2C, C2C, M-commerce, Social…
6. 1.4 E-Commerce Infrastructure — Internet, Web, Mobile — 1.4 E-Commerce Infrastructure E-commerce sits on a three-layer technology foundation : 1. Internet — the foundation The Internet is a global network-of-networks connected by the…
7. 2.0 Unit 2 Overview: Building an E-Commerce Presence — Unit II — Overview: Building an E-Commerce Presence Unit II is the practical "how to build" unit . Topics: 1. Planning — defining business goals, identifying audience, choosing…
8. 2.1 Planning, System Analysis, Design & Tech Stack — 2.1 Planning, System Analysis, Design & Choosing Tech Stack The 5-stage Build Plan (Laudon) --- Stage 1: Strategic Planning Before any code, answer five questions: 1. What is the…
9. 2.2 E-Commerce Site Components — Catalog, PLP, PDP, Cart, Checkout — 2.2 E-Commerce Site Components Every e-commerce website — Amazon, Flipkart, Myntra, Nykaa — has the same core components. They differ in implementation and polish , not in purpose…
10. 2.3 Third-Party Integrations — Payments, Analytics, Logistics — 2.3 Third-Party Integrations No e-commerce site is built end-to-end in-house. Every site integrates with specialist vendors for payments, shipping, analytics, customer support,…
11. 2.4 New Technologies — Chatbots, Recommendations, AR, Big Data, Cloud — 2.4 New Technologies in E-Commerce The IPU syllabus explicitly lists six "new technologies for e-commerce": 1. Chatbots 2. Recommendation systems (Personalisation) 3. Smart Search…
12. 3.0 Unit 3 Overview: Electronic Payment Systems — Unit III — Overview: Electronic Payment Systems Unit III is the payments-heavy unit — the IPU paper always has at least one full question on payment systems. 1. Electronic…
13. 3.1 E-Payment Overview & Electronic Funds Transfer (EFT) — 3.1 E-Payment Overview & EFT What is an Electronic Payment System? Electronic Payment System (EPS) is the paperless transfer of funds from one party to another over electronic…
14. 3.2 Smart Cards, Credit Cards & Debit Cards — 3.2 Smart Cards, Credit Cards & Debit Cards Smart Cards A smart card is a plastic card with an embedded integrated circuit (microchip) that can store and process data. Distinct…
15. 3.3 Wallets, Mobile P2P, Digital Cash & Virtual Currencies — 3.3 Wallets, Mobile P2P, Digital Cash & Virtual Currencies Smartphone / Mobile Wallets A digital wallet is a software application that stores payment instruments (cards, bank…
16. 3.4 Online Banking, UPI, Payment Gateways & EBPP — 3.4 Online Banking, UPI, Payment Gateways & EBPP Online Banking Online banking (Internet banking, net banking) is the conduct of banking transactions through a bank's website or…
17. 4.0 Unit 4 Overview: E-Commerce Security — Unit IV — Overview: E-Commerce Security Unit IV addresses threats and defences in e-commerce: 1. Security threats — cybercrimes, fraud, identity theft, DoS, social engineering 2.…
18. 4.1 Security Threats — Cybercrime, Fraud, Spoofing, Sniffing, DoS — 4.1 Security Threats in E-Commerce E-commerce sites are prime targets for cyberattackers because they handle: - Money (credit cards, bank credentials) - Personal data (name,…
19. 4.2 Mobile, Social Network & Cloud Security Issues — 4.2 Mobile, Social Network & Cloud Security Issues E-commerce now runs primarily on mobile , generates traffic via social networks , and is hosted in the cloud — each platform has…
20. 4.3 Encryption — Symmetric, Asymmetric, Digital Certificates & PKI — 4.3 Encryption — Symmetric, Asymmetric, Digital Certificates & PKI What is Encryption? Encryption is the process of converting plaintext (readable data) into ciphertext…
21. 4.4 Securing Channels & Networks — SSL, TLS, VPN, Firewall, IDS/IPS — 4.4 Securing Channels & Networks — SSL, TLS, VPN, Firewall, IDS/IPS The encryption building blocks of Lesson 3 are assembled into channel security (SSL/TLS, VPN) and network…

Course Introduction: E-Commerce

Course Introduction: E-Commerce

E-Commerce is the buying, selling, and exchange of goods, services and information over electronic networks — primarily the Internet. From a ₹100 grocery order on Blinkit to a ₹10 crore B2B contract on IndiaMART, every digital transaction sits inside the e-commerce framework.

This course (IPU BCA) covers e-commerce end-to-end across four units: foundational concepts and types (Unit I), building an e-commerce site (Unit II), electronic payment systems (Unit III), and security threats and solutions (Unit IV). By the end you will be able to design an e-commerce site, choose a payment-system architecture, identify security risks, and apply industry-standard protection.

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Why E-Commerce Matters — Real-World Scale

India's digital commerce story is one of the fastest in the world:

Global context: Worldwide e-commerce surpassed US$ 6 trillion in 2024 (Statista). Amazon, Alibaba, Shopify, Mercado Libre and JD.com lead globally.

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The Four Units At a Glance

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E-Commerce vs E-Business — A Critical Distinction

Exam tip: E-Commerce is a subset of E-Business. Every e-commerce site is part of an e-business; not every e-business has e-commerce (some run B2B operations without an online storefront).

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Textbooks (IPU Prescribed)

• TB1. Kenneth C. Laudon, E-Commerce: Business, Technology and Society, 15th Edition, Pearson — the IPU primary textbook
• TB2. K.K. Bajaj & Debjani Nag, E-Commerce: The Cutting Edge of Business, McGraw Hill, 2nd Edition, 2015
• TB3. Efraim Turban et al., Electronic Commerce — A Managerial Perspective, Addison-Wesley
• RB1. Margaret Levine Young, The Complete Reference: Internet, Tata McGraw Hill
• RB2. CSV Murthy, E-Commerce: Concepts, Models, Strategies, Himalayas Publishing
• RB3. Kalakota & Whinston, Frontiers of Electronic Commerce, Addison-Wesley
• RB4. William Stallings, Network Security Essentials: Applications & Standards, Pearson

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How to Get the Most From This Course

1. Connect theory to apps you use daily — when you order on Swiggy, identify each component: catalog, PLP, PDP, cart, checkout, payment gateway, order tracking.
2. Memorise the type taxonomy — B2B, B2C, C2C, B2G, C2B, G2C, M-commerce, social commerce with examples each.
3. Master the payment-system landscape — credit card flow, UPI flow, wallet flow are all classic exam diagrams.
4. Internalise the security stack — what threat is solved by what countermeasure (SSL for eavesdropping, firewall for unauthorised access, IDS for intrusion detection, etc.).
5. Use Indian examples — Flipkart, Amazon India, IRCTC, BHIM, Paytm, UPI — the examiner will give you bonus credit for India-specific context.

Let's begin.

1.0 Unit 1 Overview: Introduction, Types & Infrastructure

Unit I — Overview: Introduction, Types & Infrastructure

Unit I lays the conceptual foundation:

1. What is e-commerce? — Definition, evolution, e-commerce vs e-business
2. What makes it special? — Unique features that distinguish e-commerce from traditional commerce
3. Who trades with whom? — Six classical types (B2B, B2C, C2C, B2G, C2B, G2C) plus M-commerce and Social Commerce
4. What sits underneath? — Internet, web, and mobile infrastructure

Learning outcomes

After Unit I you should be able to:

• Define e-commerce and trace its evolution from EDI in the 1970s to modern omnichannel commerce
• Distinguish e-commerce and e-business
• List the eight unique features of e-commerce (Laudon)
• Identify B2B, B2C, C2C, B2G, C2B, M-commerce and Social Commerce with examples
• Describe the role of Internet, web and mobile infrastructure
• Argue advantages and disadvantages of e-commerce for buyers, sellers and society

Topic map

Chapter mapping (IPU)

• TB1 (Laudon): Chapters 1, 2

Typical exam weight

Unit I usually contributes 2 long questions:

• Define e-commerce. Differentiate e-commerce and e-business. — 12.5 marks
• Explain types of e-commerce with examples. — 12.5 marks (very high frequency)
• List unique features / advantages / disadvantages of e-commerce. — short answer

Frequently asked questions

Is the E-Commerce course really free?

Yes. The entire E-Commerce course on Siksha Sarovar is free to read with no account required. You can optionally sign in with Google to save your progress.

Do I get a certificate for E-Commerce?

Yes — finish the lessons and pass the quiz to earn a free, verifiable certificate you can share on LinkedIn or with recruiters.

Can I run code while learning?

Yes. The built-in online compiler runs C, C++, Python, Java, PHP, JavaScript, C# and SQL directly in your browser — no installation needed.