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- All HBS Web
(275)
- News (66)
- Research (165)
- Multimedia (3)
- Faculty Publications (80)
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- April 2016 (Revised November 2017)
- Case
InMobi: Reimagining Mobile Advertising
By: Sunil Gupta and Saloni Chaturvedi
InMobi, a mobile advertising company, considered one of India's first unicorns, has launched a new product called Miip. InMobi hopes that the product will grow its revenue eight times by 2018. Visually identified by a mascot, Miip seeks to reimagine adverting by... View Details
Keywords: Mobile App; Advertising; India; Applications and Software; Globalization; Digital Marketing; Mobile and Wireless Technology; Advertising Industry; China; India
Gupta, Sunil, and Saloni Chaturvedi. "InMobi: Reimagining Mobile Advertising." Harvard Business School Case 516-030, April 2016. (Revised November 2017.)
- 27 Apr 2021
- Research & Ideas
New Research: Surviving Bankruptcy, Useful Economics, and Retirement
expanded into consumer research and election forecasting. In 2019, Gupta found that his team’s prediction for an election result was distinctly different from all other pollsters. As Gupta reviewed his... View Details
- April 2018
- Case
Globalizing Japan's Dream Machine: Recruit Holdings Co., Ltd.
By: Sandra J. Sucher and Shalene Gupta
Recruit Holdings, an advertising media, staffing, and business support conglomerate was founded in 1960 by Hiromasa Ezoe. Recruit was built on the principle that the company should add value to society. To do this, it hired young and talented employees and created a... View Details
Keywords: Business Conglomerates; Mission and Purpose; Organizational Culture; Crime and Corruption; Transition; Globalization; Japan
Sucher, Sandra J., and Shalene Gupta. "Globalizing Japan's Dream Machine: Recruit Holdings Co., Ltd." Harvard Business School Case 318-130, April 2018.
- Article
Online Experimentation: Benefits, Operational and Methodological Challenges, and Scaling Guide
By: Iavor Bojinov and Somit Gupta
In the past decade, online controlled experimentation, or A/B testing, at scale has proved to be a significant driver of business innovation. The practice was first pioneered by the technology sector and, more recently, has been adopted by traditional companies... View Details
Keywords: A/B Testing; Experimentation; Data-driven Culture; Product Development; Innovation and Invention; Digital Transformation
Bojinov, Iavor, and Somit Gupta. "Online Experimentation: Benefits, Operational and Methodological Challenges, and Scaling Guide." Harvard Data Science Review, no. 4.3 (Summer, 2022).
- March 2012
- Case
Angry Birds
By: Sunil Gupta and Dharmishta Rood
Within months of its launch in December 2009, Angry Birds, a mobile game created by a small Finnish company, Rovio Entertainment Ltd., became an international hit. By late 2011, Rovio was not only making Angry Birds games for the iPhone, Android and other mobile... View Details
Keywords: Brands and Branding; Marketing Strategy; Diversification; Expansion; Video Game Industry; Finland
Gupta, Sunil, and Dharmishta Rood. "Angry Birds." Harvard Business School Case 512-033, March 2012.
- December 2010
- Case
Digital Divide
By: Sunil Gupta
In November 2010, Charles Henry, chief marketing officer of a major consumer packaged goods company, was trying to convince his senior managers to enhance the digital presence of the company's brands by significantly increasing their online marketing budget. However,... View Details
Keywords: Budgets and Budgeting; Digital Marketing; Marketing Communications; Marketing Strategy; Information Technology
Gupta, Sunil. "Digital Divide." Harvard Business School Case 511-092, December 2010.
- September 2018
- Article
An Exploratory Study of Product Development in Emerging Economies: Evidence from Medical Device Testing in India
By: Budhaditya Gupta and Stefan Thomke
Recent research has studied innovation in emerging economies. However, microlevel product development processes in these economies are relatively unexplored, and the mechanisms by which the emerging economy context might affect such processes are still unclear. In this... View Details
Keywords: India; Product Development; Emerging Markets; Situation or Environment; Medical Devices and Supplies Industry; India
Gupta, Budhaditya, and Stefan Thomke. "An Exploratory Study of Product Development in Emerging Economies: Evidence from Medical Device Testing in India." R&D Management 48, no. 4 (September 2018): 485–501.
- 2009
- Working Paper
Do Friends Influence Purchases in a Social Network?
By: Raghuram Iyengar, Sangman Han and Sunil Gupta
Social networks, such as Facebook and Myspace have witnessed a rapid growth in their membership. Some of these businesses have tried an advertising-based model with very limited success. However, these businesses have not fully explored the power of their members to... View Details
Keywords: Marketing; Network Effects; Sales; Power and Influence; Social and Collaborative Networks; Web Sites; South Korea
Iyengar, Raghuram, Sangman Han, and Sunil Gupta. "Do Friends Influence Purchases in a Social Network?" Harvard Business School Working Paper, No. 09-123, April 2009.
- 2019
- Working Paper
Managing Churn to Maximize Profits
By: Aurelie Lemmens and Sunil Gupta
Customer defection threatens many industries, prompting companies to deploy targeted, proactive customer retention programs and offers. A conventional approach has been to target customers either based on their predicted churn probability, or their responsiveness to a... View Details
Keywords: Churn Management; Defection Prediction; Loss Function; Stochastic Gradient Boosting; Customer Relationship Management; Consumer Behavior; Profit
Lemmens, Aurelie, and Sunil Gupta. "Managing Churn to Maximize Profits." Harvard Business School Working Paper, No. 14-020, September 2013. (Revised December 2019. Forthcoming at Marketing Science.)
- November 2008 (Revised November 2008)
- Case
Cyworld: Creating and Capturing Value in a Social Network
By: Sunil Gupta and Sangman Han
In May 2008, the new CEO of Cyworld, a social network company in Korea, had to decide how to create and capture value from his rapidly growing user base. Cyworld was founded in 1999, and in 2003 it was acquired by SK Telecom, a leading mobile service provider in Korea.... View Details
Keywords: Customer Value and Value Chain; Consumer Behavior; Social and Collaborative Networks; Segmentation; Value Creation; South Korea
Gupta, Sunil, and Sangman Han. "Cyworld: Creating and Capturing Value in a Social Network." Harvard Business School Case 509-012, November 2008. (Revised November 2008.)
- 2013
- Working Paper
Separating Homophily and Peer Influence with Latent Space
By: Joseph P. Davin, Sunil Gupta and Mikolaj Jan Piskorski
We study the impact of peer behavior on the adoption of mobile apps in a social network. To identify social influence properly, we introduce latent space as an approach to control for latent homophily, the idea that "birds of a feather flock together." In a series of... View Details
Keywords: Social Influence; Social Network; Mobile App; Peer Effects; Latent Homophily; Latent Space; Proxy Variables; Familiarity; Behavior; Consumer Behavior; Applications and Software; Social and Collaborative Networks; Mobile and Wireless Technology; Power and Influence; Social Media
Davin, Joseph P., Sunil Gupta, and Mikolaj Jan Piskorski. "Separating Homophily and Peer Influence with Latent Space." Harvard Business School Working Paper, No. 14-053, January 2014.
- October 2013 (Revised July 2024)
- Teaching Note
Amazon in 2024
By: Sunil Gupta
Amazon launched its website in July 1995 to sell books online and by 2020 it has grown to become a digital giant with over $280 billion in annual sales. A large part of its growth came from expanding into a variety of businesses that some see as unrelated. Has it... View Details
- May 2020 (Revised August 2022)
- Teaching Note
Direct to Consumer Brands
By: Sunil Gupta
In recent years, we have seen a dramatic rise of direct-to-consumer (DTC) brands. Many of these brands, such as Dollar Shave Club, Harry’s, Glossier, and Allbirds, entered mature markets dominated by established companies, and yet they grew rapidly to attain valuations... View Details
- 23 Jan 2018
- First Look
First Look at New Research and Ideas, January 23, 2018
consequence of actual leverage than it is of risk premiums. Publisher's link: https://www.hbs.edu/faculty/Pages/item.aspx?num=53733 2017 India as a Pioneer of Innovation The Private Provision of Missing Public Goods: Evidence from Narayana Health in India By: Khanna,... View Details
Keywords: Sean Silverthorne
- March 27, 2025
- Article
How One Company Used AI to Broaden Its Customer Base
By: Sunil Gupta and Frank V. Cespedes
The software company SAP successfully leveraged AI tools to begin selling to the small and medium enterprises (SMEs) market, which had previously been uneconomical for its in-person sales approach. By mapping the customer journey and deploying over 40 AI tools, SAP... View Details
Gupta, Sunil, and Frank V. Cespedes. "How One Company Used AI to Broaden Its Customer Base." Harvard Business Review (website) (March 27, 2025).
- 23 Jul 2013
- First Look
First Look: July 23
enhance the emotional payoff of charitable initiatives. 2013 pub Learning by Supplying By: Alcácer, Juan, and Joanne Oxley Abstract—Learning processes lie at the heart of our understanding of how firms build capabilities to generate and... View Details
Keywords: Anna Secino
- Article
Does 'Liking' Lead to Loving? The Impact of Joining a Brand's Social Network on Marketing Outcomes
Does “liking” a brand on Facebook cause a person to view it more favorably? Or is “liking” simply a symptom of being fond of a brand? We disentangle these possibilities and find evidence for the latter: brand attitudes and purchasing are predicted by consumers’... View Details
Keywords: Brands; Marketing Effectiveness; Brand Evaluation; Peer Influence; Brands and Branding; Social and Collaborative Networks; Social Media
John, Leslie K., Oliver Emrich, Sunil Gupta, and Michael I. Norton. "Does 'Liking' Lead to Loving? The Impact of Joining a Brand's Social Network on Marketing Outcomes." Journal of Marketing Research (JMR) 54, no. 1 (February 2017): 144–155.
- September–October 2020
- Article
Managing Churn to Maximize Profits
By: Aurelie Lemmens and Sunil Gupta
Customer defection threatens many industries, prompting companies to deploy targeted, proactive customer retention programs and offers. A conventional approach has been to target customers either based on their predicted churn probability or their responsiveness to a... View Details
Keywords: Churn Management; Defection Prediction; Loss Function; Stochastic Gradient Boosting; Customer Relationship Management; Consumer Behavior; Profit
Lemmens, Aurelie, and Sunil Gupta. "Managing Churn to Maximize Profits." Marketing Science 39, no. 5 (September–October 2020): 956–973.
- September 2023 (Revised December 2023)
- Case
Twiddy & Company: Trust in a Chaotic Environment
By: Sandra J. Sucher, Shalene Gupta and Tom Quinn
Twiddy & Company, known for Southern hospitality rooted in personal interactions, needed to adjust to contactless remote customer service as fear of the contagious virus prevented person-to-person contact. Local elected officials, in a bid to stop tourists from... View Details
Keywords: Trust; Health Pandemics; Organizational Culture; Disruption; Government Legislation; Transportation; Tourism Industry; North Carolina; United States
Sucher, Sandra J., Shalene Gupta, and Tom Quinn. "Twiddy & Company: Trust in a Chaotic Environment." Harvard Business School Case 324-021, September 2023. (Revised December 2023.)
- 02 Aug 2011
- First Look
First Look: August 2
workday events can make or break employees' inner work lives. But it's forward momentum in meaningful work—progress that creates the best inner work lives. Through rigorous analysis of nearly 12,000 diary entries provided by 238 employees... View Details
Keywords: Sean Silverthorne