Publications

January 2015 (Revised November 2016)
Case

La Martina: Leveraging Polo's Luxury Lifestyle

By: Anat Keinan, Maria Fernanda Miguel and Sandrine Crener

Founded in 1984 in Buenos Aires, Argentina, La Martina has grown from a high-end polo equipment company into a global fashion brand with operations in 56 countries. Polo, which is not only a sport but also a way of life, is at the core of the brand DNA. Polo is a... View Details

2010
Article

Impact of Online Consumer Reviews on Sales: The Moderating Role of Product and Consumer Characteristics

By: Feng Zhu and Michael Zhang

This article examines how product and consumer characteristics moderate the influence of online consumer reviews on product sales using data from the video game industry. The findings indicate that online reviews are more influential for less popular games and games... View Details

Keywords: Internet Marketing; Online Consumer Reviews; Word Of Mouth; Long Tail; Internet and the Web; Marketing Reference Programs; Digital Marketing; Video Game Industry

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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

November 2022
Background Note

The Future of E-Commerce: Lessons from the Livestream Wars in China

By: Ayelet Israeli, Jeremy Yang and Billy Chan

This note explores the emerging multi-billion dollar commerce trend of livestream commerce. Livestream commerce is the sale of goods or services directly to consumers via live shows on digital platforms (such as social media or e-commerce platforms). It is a form of... View Details

2021
Working Paper

Exclusive Dealing and Entry by Competing Two-Sided Platforms

By: Cristian Chica, Kenneth Chuk and Jorge Tamayo

We study competition between horizontally differentiated platforms offering exclusive and non-exclusive contracts to one side of the market (content providers). The introduction of non-exclusive contracts in addition to exclusive contracts softens the competition for... View Details

Keywords: Two-Sided Markets; Platform Price Competition; Network Externalities; Exclusive Contracts; Multi-homing; Digital Platforms; Price; Competition; Contracts

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July 2021
Article

The Effect of Price on Firm Reputation

By: Michael Luca and Oren Reshef

While a business's reputation can affect its pricing, prices can also affect its reputation. To explore the effect of prices on reputation, we investigate daily data on menu prices and online ratings from a large rating and ordering platform. We find that a price... View Details

Keywords: Pricing; Reputation Systems; IT Policy And Management; Economics Of Digital Platforms; Business Ventures; Reputation; Price; Consumer Behavior; Analysis

September 2014
Case

Victors & Spoils: 'Born Open'

By: Karim R. Lakhani and Michael L. Tushman

Victors & Spoils (V&S), located in Boulder, Colorado, was the first advertising agency built on open innovation and crowdsourcing principles from the ground-up. V&S was co-founded in 2009 by John Winsor, Claudia Batten and Evan Fry, all former members of the... View Details

Keywords: Advertising Agency; Marketing; Crowdsourcing; Open Innovation; Growth; Acquisitions; Advertising; Advertising Campaigns; Digital Marketing; Acquisition; Innovation and Invention; Advertising Industry; United States

November 2020 (Revised January 2021)
Supplement

Bridge International Academies in 2020: Battling Headwinds to Solve Africa's Education Problems

By: Caroline M. Elkins, Tarun Khanna and Joyce J. Kim

By 2020, Bridge International Academies and its "school in a box" model had achieved great scale. By leveraging digital technology and public-private partnerships, they had reached one million children across Africa and India through hundreds of schools. However, the... View Details

Keywords: Entrepreneurship In Africa; Entrepreneurship In Emerging Markets; Bottom Of The Pyramid; Education In Africa; Scale; Partnerships; Education; Entrepreneurship; Emerging Markets; Health Pandemics; Problems and Challenges; Education Industry; Africa

August 2023
Case

Kariyer.net: Recruiting AI

By: Shunyuan Zhang, Fares Khrais and Namrata Arora

In 2017, Fatih Uysal (AMP 2021) became CEO of Kariyer.net. By then, the business was already the industry leading online job board in Turkey. However, faced with stalling growth, a turbulent macroenvironment, and growing competition from international players, Uysal... View Details

2013
Working Paper

Where do the Most Active Customers Originate and How Can Firms Keep Them Engaged?

By: Clarence Lee, E. Ofek and Thomas Steenburgh

In this paper, we study how firms offering Web services can acquire and develop an active customer base. We focus on two basic questions. First, how does the method of customer acquisition affect the way customers use the service to meet their own needs and to interact... View Details

Keywords: Customer Engagement; Adoption Routes; Hidden Markov Models; Search; Word-of-Mouth; Digital Media; Customer Relationship Management; Internet and the Web; Mathematical Methods; Consumer Behavior; Entrepreneurship; Marketing Reference Programs; Web Services Industry

June 2011 (Revised June 2012)
Case

Sephora Direct: Investing in Social Media, Video, and Mobile

By: Elie Ofek and Alison Berkley Wagonfeld

Julie Bornstein, senior vice president of Sephora Direct, is seeking to double her budget for social media and other digital marketing initiatives for 2011. A number of digital efforts implemented in the past two years seem to be bearing fruit and there is a desire to... View Details

Keywords: History; Leadership; Marketing Strategy; Marketing; Emerging Markets; Investment Return; Investment Funds; Budgets and Budgeting

Jacob Cook is a Lecturer in the Marketing Unit at Harvard Business School, where he teaches the EC course Digital Marketing & AI Workshop. His work focuses on how companies design and scale customer acquisition and retention strategies using digital marketing,... View Details

January 2021 (Revised March 2022)
Case

Arçelik: From a Dealer Network to an Omnichannel Experience

By: Ayelet Israeli and Fares Khrais

Arçelik Turkey, the country’s market leader in household appliances, was at an omnichannel crossroads in January 2020. Arçelik was a B2B player utilizing a dealership network with an umbrella of brands and had one of the largest brick-and-mortar store networks in... View Details

July 2015 (Revised January 2020)
Case

Horst Dassler, Adidas, and the Commercialization of Sport

By: Geoffrey Jones, Michael Norris and Sophi Kim

The case focuses on the career of Horst Dassler, the son of the founder of the German-based sports shoe manufacturer Adidas. The origins of the firm were in the interwar years, and it rose to public prominence after it provided spikes for Jesse Owens, the famous... View Details

January 2017
Case

Expanding Ecommerce at Technos

By: Thales Teixeira, Rohit Deshpandé, Ruth Costas and Priscilla Zogbi

Technos was the market leader in the Brazilian watch market. Its CEO had made a firm commitment to evolve the company’s marketing and commercial practices by focusing less on pushing product to retail clients and more on branding to end consumers to pull watches from... View Details

2015
Working Paper

Online Word of Mouth and Product Review Disagreement

By: Frank Nagle and Christoph Riedl

Studies of online word of mouth have frequently posited―but never systematically conceptualized and explored―that the level of disagreement between existing product reviews can impact the volume and the valence of future reviews. In this study we develop a theoretical... View Details

Keywords: Online Word Of Mouth; Online Communities; Viral Marketing; Online Product Reviews; Quality; Internet and the Web; Consumer Behavior; Marketing Reference Programs; Social and Collaborative Networks; Digital Marketing; Analytics and Data Science

SSRN

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February 2019
Case

Halliday's OASIS

By: Scott Duke Kominers and Nicole Tempest Keller

Wade Watts has won control of the OASIS – a futuristic, immersive virtual reality game world. He must decide on rules, rights, and marketplace design, balancing the founding principles of the OASIS with the platform’s potentially negative externalities. View Details

Keywords: Managing Markets; Corporate Responsibility; Virtual Reality; Digital Platforms; Management; Corporate Social Responsibility and Impact; Social Media; United States

September 2023
Case

The Meteoric Rise of Skims

By: Ayelet Israeli, Jill Avery and Leonard A. Schlesinger

Since its founding in 2019 by Kim Kardashian and Jens Grede, Skims, a solutions-oriented brand creating the next generation of underwear, loungewear, and shapewear with an eye toward body-type and skin-tone inclusivity, has experienced a meteoric rise. Kardashian, who... View Details

May 2013
Supplement

Studio Moderna—A Venture in Eastern Europe

By: Jim Sharpe

This is the Spreadsheet Supplement for Studio Moderna—A Venture in Eastern Europe (HBS Case #808110). Includes Exhibit 3a, Exhibit 3b, Exhibit 5, and Exhibit 6. View Details