Publications

December 2019 (Revised November 2021)
Course Overview Note

The Entrepreneurial Manager: Spring 2022

By: Mitchell Weiss and Benjamin Henkes

This is the course overview note for “The Entrepreneurial Manager,” taught in the first year at Harvard Business School. Students will learn how to be opportunity-driven managers and how to lead under uncertainty. They'll learn how to identify opportunities, how to... View Details

Keywords: Entrepreneurial Management; Entrepreneurship; Management

Due to network effects and switching costs in platform markets, entrants generally must offer revolutionary functionality. Platform envelopment offers a second entry path: one that does not rely upon Schumpeterian innovation. Examples of successful envelopment... View Details

June 2025
Case

Accounting for OpenAI at Microsoft

By: Jonas Heese, Joseph Pacelli, Nicole Zelazko and Michael Norris

In early 2025, Microsoft was evaluating the impact of its $14 billion investment in OpenAI. As OpenAI’s computing needs expanded, Microsoft positioned Azure as the exclusive provider for training and inference of their large language models. Despite the scale of the... View Details

Keywords: Accounting; Financial Reporting; Revenue Recognition; Corporate Finance; Capital; Investment; Revenue; AI and Machine Learning; Valuation; Governance; Technology Industry; Financial Services Industry; Web Services Industry; Information Technology Industry; United States

2022
Article

Open or Closed? Your Mind, Your Decision!

By: Gerald Zaltman

The marketing profession faces challenging times. The shelf life for decisions and the half-life of the knowledge used, are becoming shorter and shorter while the problems addressed are becoming messier. Fortunately, the emergence of what I call the “prosthetic age” is... View Details

Keywords: Marketing; Information; Cognition and Thinking; Innovation and Invention

October 2013
Case

Lufa Farms

By: Jose B. Alvarez, Robert Mackalski, Annelena Loeb and Lisa Mazzanti

In 2013, Mohamed Hage, founder of the rooftop farming business called Lufa Farms, thought his company had reached a level of maturity where scaling the business model was the next logical step. With two greenhouses already in Canada, he was looking into other locations... View Details

Keywords: Rooftop Farms; Agriculture; Greenhouse; Technology; Expansion; Strategic Partnerships; Cultivation; Agribusiness; Agriculture and Agribusiness Industry; Canada

October 2016 (Revised November 2016)
Case

Innovating Beyond Ochsner

By: Richard G. Hamermesh and Olivia Hull

The Ochsner Health System has developed a proprietary software tool designed to treat hypertension. Built into the system’s electronic medical records, the Hypertension Digital Medicine program allows patients to record their blood pressure at home and share readings... View Details

January 2023 (Revised April 2025)
Case

Peloton Interactive (A)

By: Suraj Srinivasan, Lynn S. Paine and David Lane

Early in February 2022, the board of Peloton Interactive faced some knotty challenges. Immense pandemic demand for its stationary exercise bicycles and treadmills had prompted the firm to scale up production rapidly. But as gyms reopened and the virulence of the virus... View Details

Keywords: Corporate Governance; Governing and Advisory Boards; Growth Management; Investment Activism; Leadership; Entertainment and Recreation Industry; Entertainment and Recreation Industry; United States

18 May 2021
News

How Georgia State University Increased Graduation Rates

17 Mar 2008
Research & Ideas

The Lessons of Business History: A Handbook

training, accounting and information systems, design and engineering, and so on. Business history has widened its scope enormously in the last... View Details

Keywords: by Sean Silverthorne

September 2010
Article

How Firms Respond to Being Rated

By: Aaron K. Chatterji and Michael W. Toffel

While many rating systems seek to help buyers overcome information asymmetries when making purchasing decisions, we investigate how these ratings also influence the companies being rated. We hypothesize that ratings are particularly likely to spur responses from firms... View Details

Keywords: System; Information; Decisions; Cost; Opportunities; Performance; Business and Stakeholder Relations; Economics; Theory; System Shocks; Rank and Position

Fall 2019
Article

Endogenous Productivity of Demand-Induced R&D: Evidence from Pharmaceuticals

By: Kyle Myers and Mark Pauly

We examine trends in the productivity of the pharmaceutical sector over the past three decades. Motivated by Ricardo’s insight that productivity and rents are endogenous to demand when inputs are scarce, we examine the industry’s aggregate R&D production function.... View Details

Keywords: Innovation; Productivity; Pharmaceuticals; Innovation and Invention; Performance Productivity; Pharmaceutical Industry

SSRN

22 Feb 2022
News

When Losing Money Is Strategic—and When It Isn’t

Program

Competing in the Age of AI—Virtual

optimize the learning experience and maximize the exchange of ideas, our Admissions Committee makes selections that balance each participant's experience, scope of current responsibilities, View Details

Is It Time to Rethink Globalized Supply Chains?

The COVID-19 pandemic has exposed the complex interdependencies of globalized supply chains. While these global multistage production networks had spread during a relatively benign environment of falling trade barriers and increasing interdependencies among... View Details

2007
Working Paper

Platform Envelopment

By: Thomas Eisenmann, Geoffrey Parker and Marshall Van Alstyne

Due to network effects and switching costs in platform markets, entrants generally must offer revolutionary functionality. We explore a second entry path that does not rely upon Schumpeterian innovation: platform envelopment. Through envelopment, a provider in one... View Details

Keywords: Digital Platforms; Market Entry and Exit; Network Effects

July 15, 2020
Article

How to Get People to Actually Use Contact-Tracing Apps

By: Chiara Farronato, Marco Iansiti, Marcin Bartosiak, Stefano Denicolai, Luca Ferretti and Roberto Fontana

The broad adoption of contact-tracing apps would greatly help combat the spread of COVID-19. But a number of barriers—especially privacy concerns—have hindered progress in many countries that can’t or won’t mandate adoption. A solution is to start with small... View Details

Keywords: COVID-19; Contact Tracing; Apps; Privacy; Health Pandemics; Behavior; Technology Adoption; Applications and Software

May 2021
Article

Preparing for a Pandemic: Accelerating Vaccine Availability

By: Amrita Ahuja, Susan Athey, Arthur Baker, Eric Budish, Juan Camilo Castillo, Rachel Glennerster, Scott Duke Kominers, Michael Kremer, Jean Lee, Canice Prendergast, Christopher M. Snyder, Alex Tabarrok, Brandon Joel Tan and Witold Wiecek

Vaccinating the world’s population quickly in a pandemic has enormous health and economic benefits. We analyze the problem faced by governments in determining the scale and structure of procurement for vaccines. We analyze alternative approaches to procurement, arguing... View Details

Keywords: Vaccines; Procurement; Health Pandemics; Health Care and Treatment; Acquisition; Cooperation

January 2010 (Revised March 2013)
Case

foursquare

By: Mikolaj Jan Piskorski, Thomas R. Eisenmann, Jeffrey J. Bussgang and David Chen

Co-founders of foursquare are deciding how to respond to competitive threats and scale up the organization. Foursquare was a location-based online service that allowed users to "check in" to a location using an application on a smartphone. Foursquare kept track of a... View Details

Keywords: Entrepreneurship; Internet and the Web; Mobile and Wireless Technology; Competitive Advantage; Web Services Industry; United States