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- April 2025
- Teaching Note
Duolingo: On a 'Streak'
By: Jeffrey F. Rayport and Nicole Tempest Keller
Teaching Note for HBS Case No. 825-097. View Details
- 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
- September 2024
- Case
Xendit: Hiring for Growth
By: Jeffrey F. Rayport, Steve Castano, Quoc Anh Nguyen and Claire Wu
In 2019, Xendit, a growth-stage Southeast Asia (SEA) fintech venture based in Jakarta, was looking to hire a Head of Sales and Head of Product to lead its next phase of growth. Founded by Moses Lo and Tessa Wijaya, Xendit provided payment infrastructure, modeling... View Details
- 20 Aug 2024
- Interview
Angel City Football Club: A New Business Model for Women’s Sports
By: Jeffrey F. Rayport, Brian Kenny and Nicole Tempest Keller
Angel City Football Club (ACFC) was founded in 2020 by venture capitalist Kara Nortman, entrepreneur Julie Uhrman, and actor and activist Natalie Portman. As outsiders to professional sports, the all-female founding team had rewritten the playbook for how to build a... View Details
- 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
- March 2024 (Revised September 2024)
- Case
Supercell 2.0: Clash of Plans
By: Jeffrey F. Rayport and George Gonzalez
Founded in 2010, Supercell was a Helsinki, Finland-based mobile gaming company that had developed and launched five global hit mobile games: Clash of Clans, Clash Royale, Hay Day, Brawl Stars, and Boom Beach. The company’s early philosophy was that it could produce... View Details
- March 2024 (Revised August 2024)
- Case
Darktrace: Scaling Cybersecurity and AI (A)
By: Jeffrey F. Rayport and Alexis Lefort
In 2023, Darktrace CEO Poppy Gustafsson was contemplating her growth strategy at a leading U.K.-based cybersecurity venture, launched in 2013 by a group of anti-terror cyber specialists, University of Cambridge mathematicians, and artificial intelligence (AI) experts.... View Details
Keywords: Technology; Talent; Scaling; Entrepreneurship; Cybersecurity; Leadership; Business Growth and Maturation; Recruitment; Resignation and Termination; AI and Machine Learning; Growth and Development Strategy; Organizational Culture; Going Public; Technology Industry; United Kingdom; Europe; United States
- March 2024 (Revised August 2024)
- Supplement
Darktrace: Scaling Cybersecurity and AI (B)
By: Jeffrey F. Rayport and Alexis Lefort
- February 2024
- Case
FIGS: Scrubbing the Status Quo
By: Jeffrey F. Rayport and Nicole Tempest Keller
In October 2023, FIGS had revolutionized the medical scrubs industry with its fashionable and functional designs, but the venture was at a critical juncture. The digitally native vertical brand (DNVB) had gone public in a successful IPO in 2021 and reached $500 million... View Details
- January 2024 (Revised June 2024)
- Case
School of Rock: Tuning into Structured Empowerment (A)
By: Tatiana Sandino, Jeffrey Rayport, Samuel Grad and Stacy Straaberg
In summer 2021, School of Rock was a youth-oriented music education company with 291 franchise- and company-owned schools globally. Before CEO Rob Price’s hire in 2017, School of Rock’s nonconformist rock ‘n’ roll culture led to variability in teaching styles,... View Details
Keywords: Business Growth and Maturation; Business Plan; Change Management; Transformation; Communication Strategy; Decisions; Curriculum and Courses; Teaching; Employee Relationship Management; Knowledge Sharing; Leadership Style; Business or Company Management; Growth and Development Strategy; Management Style; Marketing Strategy; Mission and Purpose; Organizational Change and Adaptation; Organizational Culture; Organizational Structure; Franchise Ownership; Performance Expectations; Performance Improvement; Strategic Planning; Attitudes; Conflict Management; Corporate Strategy; Applications and Software; Technology Adoption; Education Industry; Music Industry; Massachusetts; United States
- January 2024 (Revised June 2024)
- Supplement
School of Rock: Tuning into Structured Empowerment (B)
By: Tatiana Sandino, Jeffrey Rayport, Samuel Grad and Stacy Straaberg
In September 2022, Price and his team evaluated the past year’s strategies to increase Method App adoption and discussed new initiatives to consider. View Details
- 18 Jul 2023
- Interview
Jeffrey Rayport on Product Market Fit, Profit Market Fit and Whiplash, and More
By: Jeffrey F. Rayport and Doug Levin
This episode of "Lessons from Startup Life" podcast features Jeffrey Rayport, Senior Lecturer of Business Administration at the Harvard Business School. Jeffrey specializes in teaching and researching growth-stage technology ventures and their scalability. Prior to... View Details
- January 2023 (Revised April 2023)
- Case
Cobalt Robotics: Scaling Workplace Robotics
By: Jeffrey F. Rayport, Nicole Tempest Keller and Kyung Keun Park
Founded in 2016, Cobalt Robotics, based in Fremont, California, was a Robot-as-a-Service (RaaS) company that built autonomous workplace robots that were designed to replace or supplement human security guards. Outfitted with over 60 sensors, Cobalt robots patrolled... View Details
- January 2023 (Revised December 2023)
- Case
OhmConnect: Energizing the Future
By: Jeffrey F. Rayport, Jennifer Fonstad and Nicole Tempest Keller
Founded in 2013, OhmConnect was a free consumer web app that alerted customers about peak hours of electricity demand, and paid them to lower their energy use at home during these periods. The company sold the aggregated reductions generated by thousands of households... View Details
Keywords: App Development; Renewable Energy; Electricity Usage; Regulations; VC; Technology; Customer Acquisition Cost (CAC); Scalability; Applications and Software; Growth and Development Strategy; Governing Rules, Regulations, and Reforms; Business Model; Venture Capital; Energy Industry; United States; California; Texas; Europe
- January–February 2023
- Article
The Overlooked Key to a Successful Scale-Up
By: Jeffrey F. Rayport, Davide Sola and Martin Kupp
Many start-ups experience enormous popularity and runaway growth, but only a few go on to become stable giants. What separates them from the pack? They all go through a developmental stage called extrapolation, say three business school professors.
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- 13 Dec 2022
- Interview
Why Some Start-Ups Fail to Scale
By: Jeffrey Rayport and Curt Nickisch
Managing rapid growth is a huge challenge for young businesses. Even start-ups with glowing reviews and skyrocketing sales can fail. That’s because new ventures and corporate initiatives alike have to sustain profitability at scale, according to Harvard Business School... View Details
- March 2022
- Supplement
Anomalie (C) – An Interview with Leslie Voorhees
By: Jeffrey F. Rayport and Thomas O. Jones
- March 2022 (Revised December 2022)
- Case
Perch
By: Jeffrey F. Rayport, Stacy Straaberg and Julia Kelley
In May 2021, Perch CEO Chris Bell needed to decide whether his e-commerce aggregator company, which bought and scaled Amazon Marketplace brands, should acquire up to three acquisition targets. The prospective acquisitions, Web Deals Direct, HomeCo, and Future Brands,... View Details
Keywords: Business Ventures; Acquisition; Business Growth and Maturation; Decision Making; Cost vs Benefits; Decision Choices and Conditions; Decisions; Management; Growth and Development Strategy; Strategy; Business Strategy; Integration; E-commerce; Consumer Products Industry; Retail Industry; Technology Industry; North America; United States; Massachusetts; Boston; California; Asia; Philippines
- February 2022 (Revised May 2025)
- Case
Resident 2020
By: Jeffrey F. Rayport and Thomas O. Jones
Launched in 2016, Resident was a leading player in the direct-to-consumer bed-in-a-box mattress market, where it was one of at least 175 venture-backed companies competing in the space. By late 2020, it had realized over $500 million in revenue, profitability in the... View Details
- February 2022 (Revised February 2023)
- Case
TikTok in 2020: Super App or Supernova? (Abridged)
By: Jeffrey F. Rayport, Dan Maher and Dan O'Brien
TikTok’s parent company, ByteDance, was launched in 2012 around a simple idea—helping users entertain themselves on their smartphones while on the Beijing Subway. In less than a decade, it had become one of the world’s most valuable private companies, with investors... View Details