Publications

13 Mar 2012
First Look

First Look: March 13

the reduction in store size was associated with TFP of retail chains falling by 0.4% per annum, or 40% of the post-1995 slowdown in UK retail TFP growth. China's Growing IT Services and Software Industry: Challenges and Implications... View Details

Keywords: Sean Silverthorne

April 2010 (Revised July 2014)
Case

Apple Inc. in 2010

By: David B. Yoffie and Renee Kim

On April 4, 2010, Apple Inc. launched the iPad, the company's third major innovation released over the last decade under its iconic CEO Steve Jobs. Apple's strategy of shifting its business into non-PC products had thrived so far, driven by the smashing success of the... View Details

Keywords: Technological Innovation; Product Launch; Product Positioning; Competition; Corporate Strategy; Computer Industry; Electronics Industry

June 2018 (Revised January 2020)
Case

Voice War: Hey Google vs. Alexa vs. Siri

By: David B. Yoffie, Liang Wu, Jodie Sweitzer, Denzil Eden and Karan Ahuja

By early 2018, voice-controlled intelligent assistants had become a major new front in the battle between the giants of the technology sector. "Voice War" focuses on Alphabet’s strategy for Google Assistant, its entrant in the voice assistant space, and asks how the... View Details

Keywords: Alphabet; Amazon; Apple; Strategy; Technology; Intelligent Assistants; Smart Speaker; Voice Assistants; Voice; Platform; Technology Adoption; Digital Platforms; Competitive Strategy; Product Positioning; Technology Industry

May 2022 (Revised July 2022)
Case

The Voice War Continues: Hey Google vs. Alexa vs. Siri in 2022

By: David B. Yoffie and Daniel Fisher

In 2022, after five years of pursuing a new "AI-first" strategy, Google had captured a sizeable share of the American and global markets for voice assistants. Google Assistant was used by hundreds of millions of users around the world, but Amazon retained the largest... View Details

Keywords: Strategy; Artificial Intelligence; Deep Learning; Voice Assistants; Smart Home; Market Share; Globalized Markets and Industries; Competitive Strategy; Digital Platforms; AI and Machine Learning; Technology Industry; United States

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

Find at Harvard

Web

Placement - Doctoral

Samuel G. Hanson Talia B. Gillis Business Economics, 2022 Placement: Columbia Law School, Associate Professor of Law Dissertation: Essays in Household Finance and Consumer Protection Advisors: John Beshears (Chair), View Details

05 Apr 2011
First Look

First Look: April 5

and operations theory suggests that the longer people wait, the less satisfied they become; we demonstrate that due to what we term the labor illusion, when websites engage in operational transparency by signaling that they are exerting... View Details

Keywords: Sean Silverthorne

August 2020 (Revised June 2021)
Case

Skillz: Esports and Skill-Based Mobile Gaming

By: Andy Wu, David B. Yoffie and George Gonzalez

Founded in 2012, Skillz offered a platform for mobile app developers to monetize skill-based games via prized tournaments. Skillz had over 20,000 registered developers that had created thousands of Skillz-powered games played by over 30 million registered users... View Details

Keywords: Video Games; Mobile; Esports; Applications and Software; Games, Gaming, and Gambling; Mobile and Wireless Technology; Growth and Development Strategy; Information Technology; Digital Platforms; United States

February 2008 (Revised September 2008)
Case

Apple Inc., 2008

By: David B. Yoffie and Michael Slind

In January 2007, three decades after its incorporation, Apple Computer shed the second word in its name and became Apple Inc. With that move, the company signaled a fundamental shift away from its historic status as a vendor of the Macintosh personal computer (PC)... View Details

Keywords: Business Model; Leadership; Industry Growth; Corporate Strategy; Information Infrastructure; Internet and the Web; Consumer Products Industry; Electronics Industry; Technology Industry

December 2021 (Revised March 2022)
Case

Collaboration Wars: Slack vs. Microsoft Teams

By: David B. Yoffie, Kriti Gupta, Mehek Punatar, Poonam Sacheti and Poorvi Vijay

In 2021, Slack was acquired by Salesforce. While widely viewed as the best corporate collaboration and messaging software, Slack was being challenged by Microsoft, which was giving away its competitive product, Microsoft Teams, for free with a subscription to... View Details

Keywords: Information Technology; Applications and Software; Technology Adoption; Acquisition; Business Model; Business Strategy; Competitive Strategy; Corporate Strategy; Competition; Expansion; Technology Industry

June 2011 (Revised August 2012)
Case

Coca-Cola in 2011: In Search of a New Model

By: David B. Yoffie and Renee Kim

Muhtar Kent, CEO of the Coca-Cola Company, faced a critical decision in 2011 after closing a $12 billion deal to buy its troubled North America bottling operations from its biggest bottler, Coca-Cola Enterprises. The decision was prompted by several changes in the U.S.... View Details

Keywords: Beverage Industry; Strategic Positioning; Mergers And Acquisitions; Competition; Business Model; Vertical Integration; Competitive Strategy; Corporate Strategy; Franchise Ownership; Investment; Food and Beverage Industry; United States

April 2020
Case

Apple Inc. in 2020

By: David B. Yoffie and Daniel Fisher

After a decade as CEO, Tim Cook is facing one of his biggest strategic transitions of his tenure. While Apple had performed spectacularly well under Cook, Apple's core business was maturing. Sales of iPhones, iPads, and Macs were flat or down. However, Apple's new... View Details

Keywords: Innovation; Market Positioning; Marketing Implementation; Planning; Products; Strategic Positioning; Strategy; Information Technology; Competitive Strategy; Technological Innovation; Competitive Advantage; Product Positioning; Communication; Competition; Leadership; Strategic Planning; Computer Industry; Telecommunications Industry; Technology Industry

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