Publications

April 2023 (Revised September 2023)
Case

Apple's iPhone Revolution: Pioneering the Circular Economy

By: George Serafeim

When asked to identify an example of a circular economy business model that has generated billions in revenues for a company, ChatGPT, the famous chatbot that in 2022 rocked the world with its ability to perform a variety of tasks, immediately identified and... View Details

Keywords: Iphone; Smartphone; Waste Management; Recycling; Innovation; Product Upgrade; Product Life Cycle; Sustainability; Climate Impact; Digital; Business Model Innovation; Climate Change; Information Technology; Business Model; Electronics Industry; Information Technology Industry

30 Aug 2004
Research & Ideas

Mapping Your Board’s Effectiveness

performance management system into corporate governance processes. The Balanced Scorecard strategy map portrays, on a single page, a company's strategy. It includes the financial outcomes expected;... View Details

Keywords: by Robert S. Kaplan

Willy C. Shih

Willy Shih is the Robert and Jane Cizik Professor of Management Practice in Business Administration. He is part of the Technology and Operations Management Unit, and he teaches in the MBA and Executive Education Programs. His expertise is in manufacturing, product... View Details

Keywords: aerospace; automotive; biotechnology; communications; computer; digital imaging; electrical equipment; electronics; entertainment; high technology; industrial goods; information technology industry; manufacturing; retailing; semiconductor

February 2023 (Revised March 2023)
Case

Twitter Turnaround and Elon Musk

By: Andy Wu and Goran Calic

Late afternoon on Friday, October 27th, 2022, Elon Musk was the center of attention at Twitter’s San Francisco headquarters. The night before, Musk officially took the company private and became Twitter’s majority shareholder, finally ending a months-long acquisition... View Details

Keywords: Elon Musk; Twitter; Acquisition; Revenue; Advertising; Social Media; Business or Company Management; Public Opinion; Job Cuts and Outsourcing

20 Jun 2023
Cold Call Podcast

Elon Musk’s Twitter Takeover: Lessons in Strategic Change

Keywords: Re: Andy Wu; Technology

June 1980 (Revised December 1992)
Case

Parker House (B)

The management of Boston's historic Parker House, owned by Dunfey Hotels, has received a request from a tour wholesaler to book a large number of rooms at the hotel during summer and fall 1980. This booking is tied to bookings at two other Dunfey hotels that need this... View Details

Keywords: Product Positioning; Segmentation; Accommodations Industry; Boston

July 1989
Background Note

What Is Marketing?

An introductory note for MBA students on the nature of marketing and topics encountered in its study. Defines the topic then breaks marketing into two major conceptual pieces--the tools, tasks and variables of the marketer, and the marketing process. In the tools... View Details

Keywords: Marketing

January 2015 (Revised November 2016)
Case

Stella McCartney

By: Anat Keinan and Sandrine Crener

Stella McCartney launched her own fashion house under her name in a partnership with the luxury conglomerate Kering as a 50/50 joint venture in 2001. A lifelong vegetarian, Stella McCartney does not use any leather or fur in her collections, which include women's... View Details

12 Dec 2005
Research & Ideas

Using the Law to Strategic Advantage

enough about the general practice of management that they can communicate effectively with the management team. A lawyer who can't read an income statement or understand the rudiments of View Details

Keywords: by Sean Silverthorne; Legal Services

March 2004 (Revised February 2005)
Case

Emerging Business Opportunities at IBM (A)

By: David A. Garvin and Lynne Levesque

By June 2003, IBM had made significant progress in changing the way it managed new, emerging businesses. Describes the development of a separate management program at IBM designed to identify, fund, and shepherd new businesses through growth. Traces the history of the... View Details

Keywords: History; Business or Company Management; Talent and Talent Management; Corporate Entrepreneurship; Corporate Strategy

2007
Working Paper

Coupled Search Processes: Why Is it so Difficult to Find that Organizational Design Matters?

By: Nicolaj Siggelkow and Jan Rivkin

Organizational design affects performance via coupled search processes. At low frequency, managers search for appropriate organizational designs. At higher frequency, managers use designs to search for high-performing operational choices. The two searches are coupled:... View Details

Keywords: Competency and Skills; Operations; Organizational Design; Performance; Networks; Research; Cognition and Thinking; Strategy

Read Now

07 Mar 2023
HBS Case

ChatGPT: Did Big Tech Set Up the World for an AI Bias Disaster?

understanding of the underlying technology that powers these systems, she is ringing the alarm: You have to slow down to ensure that the data that these systems are trained on aren’t inaccurate or biased,” says Neeley, who is senior associate dean of faculty... View Details

Keywords: by Scott Van Voorhis; Technology

December 2010 (Revised May 2011)
Case

Cola Wars Continue: Coke and Pepsi in 2010

By: David B. Yoffie and Renee Kim

Examines the industry structure and competitive strategy of Coca-Cola and Pepsi over 100 years of rivalry. The most intense battles of the cola wars were fought over the $74 billion CSD industry in the United States, where the average American consumes 46 gallons of... View Details

Keywords: Profit; Growth and Development Strategy; Industry Structures; Competitive Strategy; Food and Beverage Industry; United States

Teaching Interest

Overview

Prof. Nagle has taught a wide variety of topics to various types of students including everything from computer programming and e-commerce for undergraduates to cyber security for the FBI and HBS Executive Education participants to innovation and technology management... View Details

February 2013
Case

Diamond Foods, Inc.

By: Suraj Srinivasan and Tim Gray

The Diamonds Foods, Inc. case describes the major accounting blow up at the company in late 2011 that was triggered by a report by Off Wall Street, a prominent short selling research firm. Diamond Foods, a high flying growth company in 2011, grew from a walnut farmers'... View Details

January 2009
Case

Berkshire Hathaway

By: Bharat N. Anand and Samhita Patwardhan Jayanti

Berkshire Hathaway describes the history and strategy of one of the best known investment firms over the last forty years. The case describes the investment philosophy of Warren Buffett, its legendary chairman and CEO, the gradual diversification of its portfolio, its... View Details

Keywords: History; Private Equity; Diversification; Resource Allocation; Investment Portfolio; Corporate Strategy; Investment; Corporate Governance

Teaching Interest

Short Intensive Program (SIP): Agile at Scale: From OKR's and Agile to Execution Excellence

What do you want to get out of your remaining time at HBS, your career and life-plan to make an impact, starting from Day 1 post-HBS? By developing tools to drive your personal success and strategy at HBS, in this interactive immersion, we will dive into how the... View Details

Malcolm S. Salter

Malcolm Salter has been a member of the Harvard Business School faculty since 1967. His teaching and research focus on issues of corporate strategy, organization, and governance.

In addition to teaching at HBS, he has held faculty positions at the Harvard... View Details

Keywords: arts; automobiles; energy; investment banking industry; retailing; venture capital industry

March 1994 (Revised April 1994)
Case

Eli Lilly and Co.: The Flexible Facility Decision--1993

By: Gary P. Pisano

In 1993, Eli Lilly is preparing to build manufacturing capacity for three new pharmaceutical products that it expects to launch in 1996. Management wrestles with a decision of whether to add specialized manufacturing capacity or flexible capacity. This question touches... View Details

Keywords: Debates; Cost vs Benefits; Decisions; Investment; Goals and Objectives; Product Launch; Production; Corporate Strategy; Pharmaceutical Industry