Publications

April 2011 (Revised July 2014)
Case

Hindustan Petroleum Corporation Ltd.: Driving Change Through Internal Communication

By: Boris Groysberg and Michael Slind

Hindustan Petroleum (HPCL), confronted in 2003 with an urgent need to change how it operated externally, adopted a highly innovative approach to communicating internally. This case, set in 2010, presents an overview of the new, more interactive model of employee... View Details

Keywords: Communication Strategy; Interpersonal Communication; Employee Relationship Management; Innovation and Management; Leading Change; Management Practices and Processes; Organizational Change and Adaptation; Organizational Culture; Corporate Strategy; India

29 Apr 2025
HBS Seminar

Magie Cheng & David Huang

May 2016 (Revised October 2016)
Case

Agricultural Revolution without a Land Revolution: the Megafarms of CP Group

By: William C. Kirby and Nancy Hua Dai

This case describes the megafarm model launched by the CP group as part of their efforts to ensure the safety and quality of their supply chain of agricultural products (particularly, eggs) in China while also promoting the welfare of Chinese farmers. This model was... View Details

Keywords: China; Poultry; Public-private Partnership; Animal-Based Agribusiness; Family Business; Agriculture and Agribusiness Industry; China

October 1996
Background Note

Building Effective One-on-One Work Relationships

By: Linda A. Hill

Addresses how to build effective one-on-one work relationships. Spells out the importance of analyzing your network and understanding on whom you are dependent. Also provides some criteria for assessing the quality of your relationships. Finally, it discusses how to... View Details

Keywords: Performance Effectiveness; Quality; Networks; Conflict and Resolution

Alberto Cavallo is the Thomas S. Murphy Professor of Business Administration at Harvard Business School, where he teaches in the Business, Government, and the International Economy (BGIE) unit, a Faculty Research Fellow at the National Bureau of Economic Research, a... View Details

09 Jun 2020
News

Fed action, debt markets and stocks

September 2019 (Revised November 2019)
Case

Pinduoduo

By: Feng Zhu, Krishna G. Palepu, Bonnie Yining Cao and Dawn H. Lau

Founded in 2015 by serial entrepreneur, Colin Huang, Pinduoduo Inc. (PDD) had become China’s fastest-growing e-commerce platform in history. PDD pioneered a new approach to online shopping that allowed shoppers to share products, invite friends to form shopping teams,... View Details

Keywords: Digital Platforms; Business Model; Innovation and Invention; Competitive Advantage; Expansion; Strategy; E-commerce

Article

Adaptive Machine Unlearning

By: Varun Gupta, Christopher Jung, Seth Neel, Aaron Roth, Saeed Sharifi-Malvajerdi and Chris Waites

Data deletion algorithms aim to remove the influence of deleted data points from trained models at a cheaper computational cost than fully retraining those models. However, for sequences of deletions, most prior work in the non-convex setting gives valid guarantees... View Details

Keywords: Machine Learning; AI and Machine Learning

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October 1997 (Revised June 1998)
Case

Woolworths South Africa

By: David B. Yoffie and Anthony St. George

Woolworths South Africa is one of the most successful retail chains in the country, modeled on Marks and Spencer of the United Kingdom. This case focuses on the sources of Woolworth's competitive advantage within South Africa and the challenges of growth in the wake of... View Details

Keywords: Growth and Development Strategy; Competitive Strategy; Corporate Strategy; Growth Management; Global Strategy; Industry Structures; Marketing Strategy; Strategy; Business or Company Management; Retail Industry; South Africa

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March 2001 (Revised August 2003)
Case

Wilkerson Company

By: Robert S. Kaplan

The president of Wilkerson, faced with declining profits, is struggling to understand why the company is encountering severe price competition on one product line while able to raise prices without competitive response on another product line. The controller proposes... View Details

Keywords: Activity Based Costing and Management; Competition; Profit; Product; Consumer Products Industry

August 2018 (Revised February 2023)
Case

Hubble Contact Lenses: Data Driven Direct-to-Consumer Marketing

By: Jill Avery and Ayelet Israeli

As its Series A extension round approaches, the founders of Hubble, a subscription-based, social-media fueled, direct-to-consumer (DTC) brand of contact lenses, are reflecting on the marketing strategies that have taken them to a valuation of $200 million and debating... View Details

October 2017 (Revised September 2018)
Supplement

Jumia Nigeria: from Retail to Marketplace (B)

By: Ramon Casadesus-Masanell and Namrata Arora

This follow up case study explores the ramifications of Jumia's decision to move from a retail-led to a markplace business model for its e-commerce platform. The case visits the company's successes as well as its many failures when adopting this vendor-led strategy. ... View Details

Keywords: Retail; Marketplace; Inventory; Funding; Business Ecosystems; Business Ecosystem; Competition; Business Model; Globalization; Emerging Markets; Expansion; Logistics; Retail Industry; India; Nigeria; Africa

Kash Rangan is the Malcolm P. McNair Professor of Marketing at the Harvard Business School. Formerly the chairman of the Marketing Department (1998-2002), he is now the co-chairman of the school's Social Enterprise Initiative. He has taught in a wide variety of MBA... View Details

Keywords: advertising; agribusiness; apparel; automobiles; computer; consumer products; e-commerce industry; high technology; industrial goods; marketing industry; pharmaceuticals

Research Summary

Networks

Platforms and Network Effect
On-line Social Networks
Business Models

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January 2008
Background Note

Valuing Risky Debt

By: Joshua Coval and Erik Stafford

This lesson develops the classical structural approach to pricing and hedging credit risk: Merton's (1974) contingent claims model of debt and equity claims. This model is used to make investment and risk management decisions in an over-the-counter (OTC) market for... View Details

Keywords: Borrowing and Debt; Credit; Investment; Price; Risk Management; Mathematical Methods; Valuation

Article

Reputation When Threats and Transfers Are Available

By: Ernesto Dal Bo, Pedro Dal Bo and Rafael Di Tella

We present a model where a long-run player is allowed to use both money transfers and threats to influence the decisions of a sequence of short-run players. We show that threats might be used credibly (even in arbitrarily short repeated games) by a long-lived player... View Details

Keywords: Crime and Corruption; Decision Choices and Conditions; Game Theory; Mathematical Methods; Interests; Power and Influence; Reputation

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01 Dec 2015
News

What to Do When Your Organization Has Dueling Missions

October 2019 (Revised January 2020)
Case

Fixing Facebook: Fake News, Privacy, and Platform Governance

By: David Yoffie and Daniel Fisher

Mark Zuckerberg founded Facebook based on the idea that connecting people was a fundamentally good thing—and a way to turn a handsome profit. But from the beginning, Facebook received criticism both for how it handled user privacy and how it curated user-generated... View Details

Keywords: Platform; Governance; Privacy; Internet and the Web; Corporate Governance; Ethics; Business and Government Relations; Strategy; Digital Platforms; Web Services Industry