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      • April 2025
      • Background Note

      Customer Acquisition and the Cash Flow Trap

      By: E. Ofek, Barak Libai and Eitan Muller
      Startups as well as existing firms recognize the need to invest in order to acquire customers for their new ventures. And as each customer is expected at some point to have generated sufficient gross margins to cover their CAC, management expects that, soon enough, the... View Details
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      Ofek, E., Barak Libai, and Eitan Muller. "Customer Acquisition and the Cash Flow Trap." Harvard Business School Background Note 525-056, April 2025.
      • 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.)
      • July 2024
      • Teaching Note

      GoPro: Becoming a Subscription Hero

      By: Elie Ofek
      Teaching Note for HBS Case No. 522-022. View Details
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      Ofek, Elie. "GoPro: Becoming a Subscription Hero." Harvard Business School Teaching Note 525-016, July 2024.
      • May 2024
      • Case

      Naked Wines: The Profit vs. Growth Decision

      By: Benjamin C. Esty and Edward A. Meyer
      Nick Devlin faced a difficult strategic decision in October 2022. As the CEO of a UK-based subscription business connecting wine drinkers in the US, UK, and Australia with winemakers from around the world (which one journalist called the “Netflix of Wine”), he had to... View Details
      Keywords: Profit Vs. Growth; Platform Business; Economies Of Scale; Subscription Business; Wine; Scaling; Racing; Value Creation; Network Effects; Business Startups; Small Business; Financial Management; Financial Strategy; Growth Management; Business Strategy; Competitive Advantage; Expansion; Profit; E-commerce; Growth and Development Strategy; Agriculture and Agribusiness Industry; Food and Beverage Industry; United States; Australia; United Kingdom
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      Esty, Benjamin C., and Edward A. Meyer. "Naked Wines: The Profit vs. Growth Decision." Harvard Business School Case 724-462, May 2024.
      • October 2023
      • Case

      Houghton Mifflin Harcourt: A Curriculum Provider Puts Itself on the Hook for Student Outcomes

      By: John J-H Kim, Derek C. M. van Bever, Michael Norris and Max Hancock
      Jack Lynch, CEO of Houghton Mifflin Harcourt (HMH) since 2017, was leading the company’s transformation from a legacy textbook publisher to a digital-first student outcomes provider, which earned subscription revenue from digital products and curriculum. In 2023, HMH... View Details
      Keywords: Edtech; Textbook; Publishing; Leading Change; Change Management; Transformation; Digital Transformation; Expansion; Business Strategy; Publishing Industry; Education Industry; United States
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      Kim, John J-H, Derek C. M. van Bever, Michael Norris, and Max Hancock. "Houghton Mifflin Harcourt: A Curriculum Provider Puts Itself on the Hook for Student Outcomes." Harvard Business School Case 324-011, October 2023.
      • September 2023 (Revised January 2024)
      • Case

      RightHand Robotics: Choosing the First Market

      By: Thomas R. Eisenmann and Stacy Straaberg
      In early 2015, RightHand Robotics’s (RHR) leadership faced a set of decisions in commercializing the startup’s robotic picking solution. RHR’s central product was the RightPick integrated robotic picking system which featured a robotic arm, a three-fingered robotic... View Details
      Keywords: Business Startups; Market Entry and Exit; Product; Research and Development; Business Strategy; Commercialization; Information Infrastructure; Technological Innovation; Manufacturing Industry; Technology Industry; United States; Massachusetts
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      Eisenmann, Thomas R., and Stacy Straaberg. "RightHand Robotics: Choosing the First Market." Harvard Business School Case 824-006, September 2023. (Revised January 2024.)
      • June 2023 (Revised August 2023)
      • Background Note

      Subscription Models: Recurring Revenues for Lasting Growth

      By: Elie Ofek and Amy Konary
      This note offers a comprehensive exposition to subscription revenue models and aims to explain their recent rise. It covers the advantages to firms of employing a subscription-based approach to monetization (as opposed to “one-off” upfront payment), as well as the... View Details
      Keywords: Business Model; Revenue; Product Design
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      Ofek, Elie, and Amy Konary. "Subscription Models: Recurring Revenues for Lasting Growth." Harvard Business School Background Note 523-113, June 2023. (Revised August 2023.)
      • April 2023
      • Case

      Twitter: The Freedom to Speak Freely and Be Heard

      By: Randolph B. Cohen, Carin-Isabel Knoop and Mel Martin
      In April 2022, serial entrepreneur Elon Musk announced that he would be interested in purchasing the social media site Twitter for $44 billion. With more than 100 million twitter followers, Musk had historically leveraged the site to engage with the customers of his... View Details
      Keywords: Values and Beliefs; Acquisition; Social Media; Power and Influence; Technology Industry; Communications Industry; Public Relations Industry; United States
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      Cohen, Randolph B., Carin-Isabel Knoop, and Mel Martin. "Twitter: The Freedom to Speak Freely and Be Heard." Harvard Business School Case 223-026, April 2023.
      • April 18, 2023
      • Article

      The Rebirth of Software as a Service

      By: Frank V. Cespedes and Jacco van der Kooij
      Traditional sales models focus on customer acquisition and the “funnel” or “pipeline” metrics that dominate talk about sales. But this approach falls short when applied to a recurring revenue business, where the customer life cycle looks more like a bowtie, not a... View Details
      Keywords: Customers; Sales; Technology Industry
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      Cespedes, Frank V., and Jacco van der Kooij. "The Rebirth of Software as a Service." Harvard Business Review (website) (April 18, 2023).
      • November 2022 (Revised March 2024)
      • Case

      Replika AI: Monetizing a Chatbot

      By: Julian De Freitas and Nicole Tempest Keller
      In early 2018, Eugenia Kuyda, co-founder and CEO of San Francisco-based chatbot Replika AI, was deciding how to monetize the app she had built. Launched in 2017, Replika was a consumer AI “companion app” developed by a team of AI software engineers originally based in... View Details
      Keywords: Mental Health; Subscriber Models; TAM; Monetization Strategy; Marketing Strategy; Product Marketing; AI and Machine Learning; Applications and Software; Product Positioning; Health Disorders; Technology Industry
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      De Freitas, Julian, and Nicole Tempest Keller. "Replika AI: Monetizing a Chatbot." Harvard Business School Case 523-016, November 2022. (Revised March 2024.)
      • August 2022 (Revised June 2024)
      • Exercise

      How Should Netflix Add an Ad-Supported Tier?

      By: Elie Ofek and Olivier Toubia
      In the summer of 2022, it became clear that Netflix would introduce an ad-supported tier alongside its existing subscription plans in the near future. Speculation abounded as to the details of the new tier: How many minutes of advertising would it include? What picture... View Details
      Keywords: Pricing; Television Industry; Price; Marketing Strategy; Digital Platforms; Customer Value and Value Chain; Competitive Strategy; Customer Satisfaction; Entertainment and Recreation Industry
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      Ofek, Elie, and Olivier Toubia. "How Should Netflix Add an Ad-Supported Tier?" Harvard Business School Exercise 523-033, August 2022. (Revised June 2024.)
      • August 2022 (Revised February 2023)
      • Case

      NewLab: Scaling an Innovation Engine

      By: Tarun Khanna and George Gonzalez
      Silicon Valley-veteran Shaun Stewart is the CEO of NewLab, a dynamic technology hub headquartered in the storied Brooklyn Navy Yard. Founded in 2016, NewLab fostered a community of entrepreneurs, corporate and government partners, and investors, all seeking to apply... View Details
      Keywords: Entrepreneurship; Social and Collaborative Networks; Global Range; Partners and Partnerships; Networks; Growth and Development Strategy; Opportunities; Brooklyn
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      Khanna, Tarun, and George Gonzalez. "NewLab: Scaling an Innovation Engine." Harvard Business School Case 723-364, August 2022. (Revised February 2023.)
      • August 2022 (Revised March 2023)
      • Case

      Pricing at Netflix: The Sequel

      By: Elie Ofek and Amy Klopfenstein
      This case continues the themes discussed in "Pricing at Netflix" (Case 521-004). Following the conclusion of the original case, Netflix developed new, high-profile original content, added millions of subscribers, and introduced another price increase in January 2022.... View Details
      Keywords: Marketing; Advertising; Marketing Strategy; Entertainment; Film Entertainment; Television Entertainment; Finance; Strategy; Competition; Competitive Strategy; Business Strategy; Adaptation; Internet and the Web; Customers; Customer Satisfaction; Entertainment and Recreation Industry; Advertising Industry; North and Central America; United States
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      Ofek, Elie, and Amy Klopfenstein. "Pricing at Netflix: The Sequel." Harvard Business School Case 523-015, August 2022. (Revised March 2023.)
      • March 2022
      • Teaching Note

      SoundCloud: Subscription Streaming?

      By: Andy Wu and Ashish Nanda
      Teaching Note for HBS Case No. 719-430 View Details
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      Wu, Andy, and Ashish Nanda. "SoundCloud: Subscription Streaming?" Harvard Business School Teaching Note 722-428, March 2022.
      • 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
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      Yoffie, David B., Kriti Gupta, Mehek Punatar, Poonam Sacheti, and Poorvi Vijay. "Collaboration Wars: Slack vs. Microsoft Teams." Harvard Business School Case 722-398, December 2021. (Revised March 2022.)
      • October 2021 (Revised September 2022)
      • Case

      GoPro: Becoming a Subscription Hero

      By: Elie Ofek, Marco Bertini and Nicole Tempest Keller
      In 2021, Nick Woodman, founder and CEO of GoPro, was reviewing the company’s subscription offering, considering whether to extend it beyond benefits that were directly related to the company’s iconic camera. Founded in 2002, GoPro had gained renown for its innovative... View Details
      Keywords: Subscription Model; Pricing; Lifestyle Brands; Value Proposition; Business Model; Growth and Development Strategy; Marketing Strategy; Consumer Products Industry; California
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      Ofek, Elie, Marco Bertini, and Nicole Tempest Keller. "GoPro: Becoming a Subscription Hero." Harvard Business School Case 522-022, October 2021. (Revised September 2022.)
      • September 2021 (Revised March 2022)
      • Case

      Katie Couric Media: Landing the First Client

      By: N. Louis Shipley and William R. Kerr
      In May 2018, celebrated journalist Katie Couric and her husband, John Molner, had recently launched a full-service media firm called Katie Couric Media (KCM). Couric treasured the opportunity to address important social issues like gender equality, environmental... View Details
      Keywords: Customer Acquisition; Subscription Model; Entrepreneurship; Business Startups; Media; Customers; Acquisition; Social Issues; Brands and Branding; Media and Broadcasting Industry
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      Shipley, N. Louis, and William R. Kerr. "Katie Couric Media: Landing the First Client." Harvard Business School Case 822-011, September 2021. (Revised March 2022.)
      • September 2021 (Revised December 2021)
      • Case

      STARZPLAY: Shooting for the Stars

      By: Elie Ofek, Marco Bertini and Alpana Thapar
      In mid-2021, Maaz Sheikh, cofounder and CEO of STARZPLAY, a Dubai-based subscription video on demand (SVOD) provider that catered to the Middle East and North Africa region, was wrestling with how to find the right balance between continued subscriber growth and... View Details
      Keywords: Pricing; Growth; Profitability; Subscription Business; Business Model Innovation; Fintech; Subscription; Performance Measurement; Promotions; International Marketing; Streaming; Competition; Marketing; Price; Strategy; Entrepreneurship; Performance; Measurement and Metrics; Business Model; Media and Broadcasting Industry; Middle East; North Africa
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      Ofek, Elie, Marco Bertini, and Alpana Thapar. "STARZPLAY: Shooting for the Stars." Harvard Business School Case 522-005, September 2021. (Revised December 2021.)
      • September 2021
      • Case

      Worldreader: Helping Readers Build a Better World

      By: Marco Bertini, Elie Ofek and Julia Kelley
      Founded in 2010, Worldreader was an international nonprofit organization that promoted reading to children around the world. For many years, Worldreader distributed e-readers to under-resourced communities and funded its operations primarily through philanthropic... View Details
      Keywords: Subscription Model; Price; Financial Strategy; Education; Early Childhood Education; Learning; Geography; Geographic Scope; Global Range; Goals and Objectives; Marketing; Marketing Strategy; Markets; Organizations; Mission and Purpose; Social Enterprise; Non-Governmental Organizations; Nonprofit Organizations; Society; Social Issues; Strategy; Commercialization; Expansion; Segmentation; Education Industry; Africa; Asia; Latin America; Europe; North and Central America; South America
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      Bertini, Marco, Elie Ofek, and Julia Kelley. "Worldreader: Helping Readers Build a Better World." Harvard Business School Case 522-003, September 2021.
      • May 2021 (Revised August 2021)
      • Case

      Melissa Wood Health: How to Win in the Creator Economy

      By: Eva Ascarza
      In October 2020, Melissa Wood-Tepperberg, founder of the digital subscription wellness platform Melissa Wood Health (MWH) and creator of ‘The MWH Method,’ was evaluating the strategic directions of her company. What had started as a way to share workouts and wellness... View Details
      Keywords: Lifestyle Brand; Brands and Branding; Strategy; Partners and Partnerships; Negotiation
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      Ascarza, Eva. "Melissa Wood Health: How to Win in the Creator Economy." Harvard Business School Case 521-086, May 2021. (Revised August 2021.)
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