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  • All HBS Web  (294)
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    • Research  (223)
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  • February 2008 (Revised March 2008)
  • Teaching Note

LinkedIn (TN) (A) and (B)

By: Mikolaj Jan Piskorski
In the summer of 2005, LinkedIn, a two-year-old start-up, was choosing between two options to monetize its 5 million business people network. Members could contact each other through trusted intermediaries on the network to offer or seek jobs, consulting engagements,... View Details
Keywords: Business Startups; Social and Collaborative Networks; Internet and the Web; Financing and Loans; Revenue; Design; Service Operations
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Piskorski, Mikolaj Jan. "LinkedIn (TN) (A) and (B)." Harvard Business School Teaching Note 708-406, March 2008. (Revised from original February 2008 version.)
  • 17 Mar 2015
  • First Look

First Look: March 17

founders debated whether to stay focused on growing Bazaart's user base and worry about driving revenue later, or try and monetize the app (by introducing in-app purchases, native advertising, or moving to a subscription model) and bring... View Details
Keywords: Sean Silverthorne
  • December 2018 (Revised February 2020)
  • Case

Fishbowl: Scaling Up

By: Leslie K. John
Fishbowl is a social media app that allows professionals to connect with other relevant professionals both within their company and across industry. Unlike many other social media apps, on which users typically present idealized portraits of themselves, on Fishbowl,... View Details
Keywords: Communication Technologies; Customer Value; Value Chain; Interpersonal Communication; Talent and Talent Management; Customer Value and Value Chain; Entrepreneurship; Business Model; Growth and Development Strategy; Marketing Strategy; Advertising; Product Marketing; Digital Platforms; Consumer Behavior; Network Effects; Emotions; Motivation and Incentives; Trust; Applications and Software; Technology Adoption; Social Media; Communications Industry; Employment Industry; Media and Broadcasting Industry; Technology Industry; Telecommunications Industry; United States
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John, Leslie K. "Fishbowl: Scaling Up." Harvard Business School Case 919-013, December 2018. (Revised February 2020.) (Email mking@hbs.edu for a courtesy copy.)
  • February 2024
  • Case

Tabby: Winning Consumers' Digital Wallets

By: Eva Ascarza and Fares Khrais
Hosam Arab (MBA 2009), cofounder and CEO of Tabby, a Saudi-based fintech startup, raised its Series D funding round in October 2023, four years after its inception, valuing it as a regional unicorn. Tabby's core product, a buy-now-pay-later (BNPL) service, allowed... View Details
Keywords: Business Model; Business Startups; Risk Management; Competitive Strategy; Expansion; Financial Services Industry; Technology Industry; Saudi Arabia
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Ascarza, Eva, and Fares Khrais. "Tabby: Winning Consumers' Digital Wallets." Harvard Business School Case 524-056, February 2024.
  • October 2023 (Revised February 2024)
  • Case

Bizongo and e-B2B in India

By: Álvaro Rodríguez Arregui and Radhika Kak
Bizongo, an Indian e-B2B platform was co-founded by three college graduates in 2015 with the goal of creating the "Alibaba of India" when the B2B e-commerce landscape was practically non-existent. The founders saw a significant opportunity in connecting mid-sized... View Details
Keywords: Business Startups; Decision Choices and Conditions; Entrepreneurship; Digital Platforms; E-commerce; Business Strategy; India
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Rodríguez Arregui, Álvaro, and Radhika Kak. "Bizongo and e-B2B in India." Harvard Business School Case 824-100, October 2023. (Revised February 2024.)
  • February 2017
  • Case

Yemeksepeti: Growing and Expanding the Business Model through Data

By: William R. Kerr, Gamze Yucaoglu and Eren Kuzucu
In October 2016, Nevzat Aydin, co-founder and CEO of Yemeksepeti, the Turkish online food-ordering company, was looking over the company's quarterly results and projections for the upcoming year with his management team. It had been almost a year and a half since Aydin... View Details
Keywords: Entrepreneurial Management; Entrepreneurial Ventures; Turkey; Big Data; Customer Focused Organization; Service Management; Continuous Improvement; Data Analysis; Internet; Growth Strategy; Technological Change; Information Systems; Entrepreneurship; Corporate Strategy; Analytics and Data Science; Analysis; Customer Focus and Relationships; Emerging Markets; Service Operations; Competitive Advantage; Performance Improvement; Internet and the Web; Growth and Development Strategy; Information Technology; Value Creation; Food and Beverage Industry; Turkey
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Kerr, William R., Gamze Yucaoglu, and Eren Kuzucu. "Yemeksepeti: Growing and Expanding the Business Model through Data." Harvard Business School Case 817-095, February 2017.
  • 2025
  • Working Paper

Tax Planning, Illiquidity, and Credit Risks: Evidence from DeFi Lending

By: Lisa De Simone, Peiyi Jin and Daniel Rabetti
This study establishes a plausible causal link between tax-planning-induced illiquidity and credit risks in lending markets. Exploiting an exogenous tax shock imposed by the Internal Revenue Service (IRS) on cryptocurrency gains, along with millions of transactions in... View Details
Keywords: Cryptocurrency; Taxation; Financial Liquidity; Credit; Financing and Loans; Financial Markets
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De Simone, Lisa, Peiyi Jin, and Daniel Rabetti. "Tax Planning, Illiquidity, and Credit Risks: Evidence from DeFi Lending." Working Paper, February 2025.
  • February 2022 (Revised February 2023)
  • Case

TikTok in 2020: Super App or Supernova? (Abridged)

By: Jeffrey F. Rayport, Dan Maher and Dan O'Brien
TikTok’s parent company, ByteDance, was launched in 2012 around a simple idea—helping users entertain themselves on their smartphones while on the Beijing Subway. In less than a decade, it had become one of the world’s most valuable private companies, with investors... View Details
Keywords: Digital Platform; Artificial Intelligence; AI; Mobile App; Mobile App Industry; Mobile and Wireless Technology; Market Entry and Exit; Brands and Branding; Growth and Development Strategy; China
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Rayport, Jeffrey F., Dan Maher, and Dan O'Brien. "TikTok in 2020: Super App or Supernova? (Abridged)." Harvard Business School Case 822-112, February 2022. (Revised February 2023.)
  • February 2021 (Revised March 2022)
  • Case

TikTok in 2020: Super App or Supernova?

By: Jeffrey F. Rayport, Dan Maher and Dan O'Brien
TikTok’s parent company, ByteDance, was launched in 2012 around a simple idea – helping users entertain themselves on their smartphones while on the Beijing Subway. In less than a decade, it had become one of the world’s most valuable private companies, with investors... View Details
Keywords: Business Model; Business Startups; Business Organization; Change Management; Disruption; Cross-Cultural and Cross-Border Issues; Global Strategy; Health Pandemics; Innovation Strategy; Growth and Development Strategy; Growth Management; Brands and Branding; Marketing Strategy; Marketing Channels; Network Effects; Digital Platforms; Product Design; Product Development; Partners and Partnerships; Opportunities; Social Issues; Mobile and Wireless Technology; Internet and the Web; Value Creation; United States; China
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Rayport, Jeffrey F., Dan Maher, and Dan O'Brien. "TikTok in 2020: Super App or Supernova?" Harvard Business School Case 821-087, February 2021. (Revised March 2022.)
  • September 2008 (Revised October 2008)
  • Case

Marc Abrahams: Annals of an Improbable Entrepreneur

By: Boris Groysberg and Michael Slind
Marc Abrahams was a media entrepreneur who specialized in science humor. In 2008, he sought to boost the scale and monetization potential of his business. That business, called Improbable Research, encompassed a magazine (Annals of Improbable Research), a high-profile... View Details
Keywords: Entrepreneurship; Selection and Staffing; Human Capital; Growth and Development Strategy; Brands and Branding; Personal Development and Career
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Groysberg, Boris, and Michael Slind. "Marc Abrahams: Annals of an Improbable Entrepreneur." Harvard Business School Case 409-013, September 2008. (Revised October 2008.)
  • September 2019 (Revised February 2020)
  • Teaching Note

Fishbowl: Scaling Up

By: Leslie K. John
Email mking@hbs.edu for a courtesy copy.

Teaching Note for HBS No. 919-013. Fishbowl is a social media app that allows professionals to connect with other relevant professionals both within their company and... View Details
Keywords: Communication Technologies; Customer Value; Value Chain; Interpersonal Communication; Talent and Talent Management; Customer Value and Value Chain; Entrepreneurship; Business Model; Growth and Development Strategy; Marketing Strategy; Advertising; Product Marketing; Digital Platforms; Consumer Behavior; Network Effects; Emotions; Motivation and Incentives; Trust; Applications and Software; Technology Adoption; Digital Platforms; Communications Industry; Employment Industry; Media and Broadcasting Industry; Technology Industry; Telecommunications Industry; United States
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John, Leslie K. "Fishbowl: Scaling Up." Harvard Business School Teaching Note 920-022, September 2019. (Revised February 2020.) (Email mking@hbs.edu for a courtesy copy.)
  • January 2020
  • Case

Ureed.com: The Marketplace for Language

By: Ashley V. Whillans, Esel Çekin and Alpana Thapar
Jordanian entrepreneur, Nour Al Hassan, founded Tarjama in 2008, tapping into an underserved and high demand need: Arabic translation service. Its lean model comprised of hiring full-time employees, mainly women, who worked from home. It steadily grew over the... View Details
Keywords: Language Translation; Freelancers; Entrepreneurship; Human Resources; Management; Expansion; Quality; Growth and Development Strategy
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Whillans, Ashley V., Esel Çekin, and Alpana Thapar. "Ureed.com: The Marketplace for Language." Harvard Business School Case 920-038, January 2020.
  • 19 Sep 2023
  • HBS Case

How Will the Tech Titans Behind ChatGPT, Bard, and LLaMA Make Money?

monetized. At minimum, I can tell you that we are going to need new business models, and the integration of generative AI is going to transform how we monetize software and the business model. Rand: How so? Wu: Our notions of fixed cost... View Details
Keywords: by Ben Rand; Technology; Information Technology
  • 21 Nov 2023
  • Op-Ed

The Beauty Industry: Products for a Healthy Glow or a Compact for Harm?

In my recently published book Deeply Responsible Business, I write about business leaders since the 19th century who have acted responsibly, often by putting the welfare of their communities above the idea of maximizing profits. I make a sharp distinction between... View Details
Keywords: by Geoffrey Jones; Beauty & Cosmetics
  • 2019
  • White Paper

Impact-Weighted Financial Accounts: The Missing Piece for an Impact Economy

By: George Serafeim, T. Robert Zochowski and Jennifer Downing
Reimagining capitalism is an imperative. We need to create a more inclusive and sustainable form of capitalism that works for every person and the planet. Massive environmental damage, growing income and wealth disparity, stress, and depression within developed... View Details
Keywords: Impact-Weighted Accounts; IWAI; Background; Economic Systems; Economy; Corporate Social Responsibility and Impact; Measurement and Metrics; Financial Statements
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Serafeim, George, T. Robert Zochowski, and Jennifer Downing. "Impact-Weighted Financial Accounts: The Missing Piece for an Impact Economy." White Paper, Harvard Business School, Boston, MA, September 2019.
  • January 2000 (Revised April 2000)
  • Case

StarMedia: Launching a Latin American Revolution

By: Thomas R. Eisenmann and Jon K Rust
By the fall of 1999, StarMedia had sprinted to a sizable lead in the race to acquire Latin American Internet users. Its pan-regional, horizontal portal was the first to target Spanish- and Portuguese-language speakers on the Internet, registering 1.2 billion page views... View Details
Keywords: Private Ownership; History; Risk Management; Business Cycles; Corporate Entrepreneurship; Infrastructure; Media; Emerging Markets; Cross-Cultural and Cross-Border Issues; Web; Information Technology Industry; Web Services Industry
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Eisenmann, Thomas R., and Jon K Rust. "StarMedia: Launching a Latin American Revolution." Harvard Business School Case 800-166, January 2000. (Revised April 2000.)
  • 12 Mar 2024
  • HBS Case

How Used Products Can Unlock New Markets: Lessons from Apple's Refurbished iPhones

Some of Apple’s most loyal customers think nothing of upgrading to the latest iPhone every time one comes out. But what about consumers who can’t splurge on a $1,000 iPhone 15 Pro? And what about the electronic waste that would accrue if people threw away functional... View Details
Keywords: by Rachel Layne; Electronics; Information Technology
  • 17 Jan 2012
  • First Look

First Look: January 17

CornellHarvard Business School Case 112-040 Yahoo! faces a number of governance and strategic challenges in late 2011 as it tries to compete with rivals such as Google and find ways to monetize its shareholding and business links with... View Details
Keywords: Sean Silverthorne
  • February 2022 (Revised July 2022)
  • Supplement

InstaDeep: AI Innovation Born in Africa (B)

By: Shikhar Ghosh and Esel Çekin
Karim Beguir and Zohra Slim were the co-founders of InstaDeep, a deep tech startup focusing on artificial intelligence (AI) solutions. Instadeep was one of the few companies globally that were partnering with DeepMind, an AI subsidiary of Google [Alphabet Inc.].... View Details
Keywords: AI; Artificial Intelligence; Entrepreneurship; Operations; Business Subsidiaries; Brands and Branding; Innovation and Invention; Growth and Development Strategy; AI and Machine Learning; Technology Industry; Africa
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Ghosh, Shikhar, and Esel Çekin. "InstaDeep: AI Innovation Born in Africa (B)." Harvard Business School Supplement 822-105, February 2022. (Revised July 2022.)
  • 2013
  • Dissertation

Designing Freemium: A Model of Consumer Usage, Upgrade, and Referral Dynamics

By: Clarence Lee, Vineet Kumar and Sunil Gupta
Abstract. Over the past decade "freemium" (free + premium) has become the dominant business model among internet start-ups for its ability to acquire and monetize a large install-base with limited marketing resources. Freemium is a hybrid strategy where a firm offers... View Details
Keywords: Discrete-Continuous Choice Dynamic Structural Models; Bayesian Estimation; Word-of-Mouth; Digital Services; Freemium; Entrepreneurship; Business Model; Motivation and Incentives; Marketing Strategy; Internet and the Web; Consumer Behavior; Marketing Reference Programs; Business Startups
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Lee, Clarence, Vineet Kumar, and Sunil Gupta. "Designing Freemium: A Model of Consumer Usage, Upgrade, and Referral Dynamics." Diss., Harvard Business School, 2013. (Job Market Paper.)
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