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  • January 2025 (Revised April 2025)
  • Case

Duolingo: On a 'Streak'

By: Jeffrey F. Rayport, Nicole Tempest Keller and Nicole Luo
In December 2024, Severin Hacker, Co-Founder and Chief Technology Officer of Duolingo, reflected on the remarkable evolution of the language-learning app he helped launch in 2011. As the #1 most downloaded education app in the world, Duolingo had over 100 million... View Details
Keywords: Learning; AI and Machine Learning; Growth and Development Strategy; Motivation and Incentives; Diversification; Business Model; Market Entry and Exit; Technology Industry; Education Industry; United States
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Rayport, Jeffrey F., Nicole Tempest Keller, and Nicole Luo. "Duolingo: On a 'Streak'." Harvard Business School Case 825-097, January 2025. (Revised April 2025.)
  • May–June 1996
  • Article

Ruling the Net

By: Jeffrey Bussgang and Debora Spar
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Bussgang, Jeffrey, and Debora Spar. "Ruling the Net." Harvard Business Review 74, no. 3 (May–June 1996): 125–133.
  • February 2016 (Revised February 2017)
  • Case

Mattermark

By: Jeffrey Bussgang and Annelena Lobb
Mattermark, a software-as-a-service company that sold software allowing companies to access financial information about privately-held companies and startups, was at a turning point. CEO Danielle Morrill had to allocate investment funding from a Series A round. She... View Details
Keywords: Entrepreneurship; Applications and Software; Business Startups; Marketing; Strategy; Technology Industry; United States
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Bussgang, Jeffrey, and Annelena Lobb. "Mattermark." Harvard Business School Case 816-073, February 2016. (Revised February 2017.)
  • June 1996
  • Article

Ruling Commerce in the Networld

By: Debora Spar and Jeffrey Bussgang
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Spar, Debora, and Jeffrey Bussgang. "Ruling Commerce in the Networld." Journal of Computer-Mediated Communication 2, no. 1 (June 1996).
  • March 2024 (Revised April 2024)
  • Case

Angel City Football Club: Scoring a New Model

By: Jeffrey F. Rayport, Jennifer Fonstad and Nicole Tempest Keller
In January 2024, Kara Nortman, Julie Uhrman, and Natalie Portman, the founders of Angel City Football Club (ACFC) were developing the club’s first three-year strategic plan. Founded in 2020, ACFC had a star-studded investor group, including Portman and celebrities such... View Details
Keywords: Sports; Entertainment; Entrepreneurship; Brands and Branding; Venture Capital; Business Model; Corporate Strategy; Digital Marketing; Sports Industry; Entertainment and Recreation Industry; United States; California; Los Angeles
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Rayport, Jeffrey F., Jennifer Fonstad, and Nicole Tempest Keller. "Angel City Football Club: Scoring a New Model." Harvard Business School Case 824-192, March 2024. (Revised April 2024.)
  • 11 Mar 2008
  • First Look

First Look: March 11, 2008

hypotheses underlying the firm's balanced scorecard and strategy map reveal problems with the strategy on a timelier basis. We also test alternative hypotheses to those underlying the firm's formal strategy map and scorecard that are consistent with concerns expressed... View Details
Keywords: Martha Lagace
  • June 2024
  • Supplement

VC Journey Vignette (B): Navigating Turbulent Times

By: Jeffrey J. Bussgang and Jackie Grant
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Bussgang, Jeffrey J., and Jackie Grant. "VC Journey Vignette (B): Navigating Turbulent Times." Harvard Business School Supplement 824-206, June 2024.
  • June 2024
  • Case

VC Journey Vignette (A): Board Formation and Onboarding

By: Jeffrey J. Bussgang and Jackie Grant
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Bussgang, Jeffrey J., and Jackie Grant. "VC Journey Vignette (A): Board Formation and Onboarding." Harvard Business School Case 824-205, June 2024.
  • September 2022
  • Case

AllSpice: GitHub for Hardware Engineers

By: Jeffrey J. Bussgang and Mel Martin
AllSpice, a software-as-a-service company that built a GitHub-like revision control tool for hardware engineers, was in the midst of preparing for rapid scale when the 2022 market downturn left them with big decisions to make. Cofounder and CEO Valentina Ratner had to... View Details
Keywords: Scaling; SaaS; Strategy; Marketing; Growth and Development Strategy; Resource Allocation; Customer Focus and Relationships; Technology Industry; Electronics Industry; United States
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Bussgang, Jeffrey J., and Mel Martin. "AllSpice: GitHub for Hardware Engineers." Harvard Business School Case 823-022, September 2022.
  • February 2021
  • Teaching Plan

Soofa: Displaying the Right Path?

By: Jeffrey J. Bussgang and Amy Klopfenstein
This teaching plan serves as a supplement to the case “Soofa: Displaying the Right Path?” HBS 820-098. The case explores the tension between two different financing and expansion plans for a startup, and explores issues related to business model pivots and industry... View Details
Keywords: Business Ventures; Business Model; Business Plan; Business Startups; Entrepreneurship; Decision Making; Decisions; Judgments; Ethics; Geography; Geopolitical Units; Finance; Investment; Markets; Market Entry and Exit; Demand and Consumers; Media; Society; Urban Development; Sustainable Cities; Information Technology; Information Infrastructure; Digital Platforms; Strategy; Business Strategy; Expansion; Relationships; Capital; Venture Capital; Advertising Industry; Technology Industry; Media and Broadcasting Industry; North and Central America; United States; Massachusetts; Cambridge
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Bussgang, Jeffrey J., and Amy Klopfenstein. "Soofa: Displaying the Right Path?" Harvard Business School Teaching Plan 821-055, February 2021.
  • December 2018
  • Case

Choosy

By: Jeffrey J. Bussgang and Julia Kelley
Founded in 2017, Choosy is a data-driven fashion startup that uses algorithms to identify styles trending on social media. After manufacturing similar items using a China-based supply chain, Choosy sells them to consumers through its website and social media pages.... View Details
Keywords: Artificial Intelligence; Algorithms; Machine Learning; Neural Networks; Instagram; Influencer; Fast Fashion; Design; Customer Satisfaction; Customer Focus and Relationships; Decision Making; Cost vs Benefits; Innovation and Invention; Brands and Branding; Product Positioning; Demand and Consumers; Supply Chain; Production; Logistics; Business Model; Expansion; Internet and the Web; Mobile and Wireless Technology; Digital Platforms; Social Media; Technology Industry; Fashion Industry; North and Central America; United States; New York (state, US); New York (city, NY)
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Bussgang, Jeffrey J., and Julia Kelley. "Choosy." Harvard Business School Case 819-054, December 2018.
  • January 2018 (Revised January 2019)
  • Case

ZappRx

By: Jeffrey J. Bussgang and Olivia Hull
In October 2015, ZappRx founder Zoe Barry is deciding between two business models for her health technology start-up. Her product, a software application that aims to expedite the prescription fulfillment process for patients with rare diseases, has attracted interest... View Details
Keywords: Speciality Drugs; Hub Services; Pivot; Speciality Prescriptions; Health Care and Treatment; Customization and Personalization; Internet and the Web; Business Model; Decision Choices and Conditions; Pharmaceutical Industry; Massachusetts
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Bussgang, Jeffrey J., and Olivia Hull. "ZappRx." Harvard Business School Case 818-001, January 2018. (Revised January 2019.)
  • March 2016
  • Teaching Plan

Jibo: A Social Robot for the Home

By: Jeffrey J. Bussgang and Christine Snively
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Bussgang, Jeffrey J., and Christine Snively. "Jibo: A Social Robot for the Home." Harvard Business School Teaching Plan 816-084, March 2016.
  • September 2023 (Revised March 2024)
  • Case

ReMo Energy: Sizing Up Investors

By: Jeffrey J. Bussgang and Tom Quinn
In 2023, executives with ReMo Energy (founded 2020) were deciding which size ammonia plant to build as their first project. Their innovative model produced ammonia—useful for making fertilizer and for energy storage—from renewable energy, and they had received funding... View Details
Keywords: Factories, Labs, and Plants; Business Startups; Cost vs Benefits; Design; Energy Conservation; Energy Generation; Renewable Energy; Venture Capital; Investment Return; Goods and Commodities; Size; Infrastructure; Risk and Uncertainty; Science-Based Business; Commercialization; Technological Innovation; Chemical Industry; Energy Industry; Green Technology Industry; United States; Boston
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Bussgang, Jeffrey J., and Tom Quinn. "ReMo Energy: Sizing Up Investors." Harvard Business School Case 824-027, September 2023. (Revised March 2024.)
  • December 2016
  • Teaching Plan

Mattermark

By: Jeffrey J. Bussgang and Annelena Lobb
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Bussgang, Jeffrey J., and Annelena Lobb. "Mattermark." Harvard Business School Teaching Plan 817-090, December 2016.
  • February 19, 2016
  • Article

Every Company Needs a Growth Manager

By: Jeffrey J. Bussgang and Nadav Benbarak
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Bussgang, Jeffrey J., and Nadav Benbarak. "Every Company Needs a Growth Manager." Harvard Business Review (website) (February 19, 2016).
  • 20 Nov 2012
  • First Look

First Look: November 20

and Regulatory Approval of Genetically Modified Organisms Authors:Shon R. Hiatt and Sangchan Park Publication:Academy of Management Journal (forthcoming) Abstract Little is known about the factors that influence regulatory-agency decision making. We posit that... View Details
Keywords: Sean Silverthorne
  • March 2022 (Revised January 2023)
  • Case

Clara Wu Tsai and Brooklyn Loan Innovation

By: Archie L. Jones, Jeffrey J. Bussgang and Henry McGee
Philanthropist Clara Wu Tsai is committed to racial equity and investing in Brooklyn-based minority business owners. In the wake of the George Floyd murder, she decides to create a new initiative called the Social Justice Fund and commit an initial $50 million over 10... View Details
Keywords: Minority-owned Businesses; Racial Equity; Entrepreneurship; Race; Values and Beliefs; Small Business; Partners and Partnerships; Social Issues; Investment; Corporate Social Responsibility and Impact; Decision Making; Brooklyn
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Jones, Archie L., Jeffrey J. Bussgang, and Henry McGee. "Clara Wu Tsai and Brooklyn Loan Innovation." Harvard Business School Case 822-124, March 2022. (Revised January 2023.)
  • January 2011 (Revised March 2011)
  • Case

Predictive Biosciences

By: Thomas R. Eisenmann, Jeffrey J. Bussgang and David Kiron
A small cancer diagnostics start-up is deciding whether to acquire a laboratory to make and sell its bladder cancer test or build its own manufacturing and sales team. View Details
Keywords: Mergers and Acquisitions; Factories, Labs, and Plants; Business Startups; Entrepreneurship; Health Testing and Trials; Growth and Development Strategy; Product Development; Biotechnology Industry
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Eisenmann, Thomas R., Jeffrey J. Bussgang, and David Kiron. "Predictive Biosciences." Harvard Business School Case 811-015, January 2011. (Revised March 2011.)
  • 27 Jan 2015
  • First Look

First Look: January 27

  Publications January 2015 American Economic Review: Papers and Proceedings Do Strict Capital Requirements Raise the Cost of Capital? Bank Regulation, Capital Structure, and the Low Risk Anomaly By: Baker, Malcolm, and Jeffrey Wurgler... View Details
Keywords: Sean Silverthorne
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