Publications

February 2023
Case

Success Academy Charter Schools

By: Robin Greenwood, Joshua D. Coval, Denise Han, Ruth Page and Dave Habeeb

This stand-alone multimedia case follows the story of Eva Moskowitz and Success Academy, a network of high-performing charter schools in New York City. As a New York City councilor between 1999 and 2006, Moskowitz became frustrated over the inertia and dysfunction in... View Details

Keywords: Business and Government Relations; Performance Effectiveness; Equality and Inequality; Private Sector; Education Industry; New York (city, NY)

Research Summary

Research Summary

By: Jeffrey T. Polzer

Jeff Polzer is the UPS Foundation Professor of Human Resource Management in the Organizational Behavior Unit at Harvard Business School. He studies how people collaborate in teams and across... View Details

22 May 2011
News

Change the World, and Win Fabulous Prizes

18 Dec 2018
News

José Mourinho thought he could buy success – now he’s paid the price

Jeffrey T. Polzer

Jeff Polzer is the UPS Foundation Professor of Human Resource Management in the Organizational Behavior Unit at Harvard Business School. He studies how people collaborate in teams and across organizational networks to accomplish their individual and collective... View Details

February 2008 (Revised March 2008)
Teaching Note

LinkedIn (TN) (A) and (B)

By: Mikolaj Jan Piskorski

In the summer of 2005, LinkedIn, a two-year-old start-up, was choosing between two options to monetize its 5 million business people network. Members could contact each other through trusted intermediaries on the network to offer or seek jobs, consulting engagements,... View Details

Keywords: Business Startups; Social and Collaborative Networks; Internet and the Web; Financing and Loans; Revenue; Design; Service Operations

15 Oct 2015
Blog Post

Why We Recruit: Medallia

small group information sessions, and working directly with HBS clubs to facilitate trek visits to Medallia's headquarters in Palo Alto. We will also leverage our network of awesome Medallia HBS alumni to connect with current students to... View Details

Keywords: Technology

April 2013
Article

Overcoming Resistance to Organizational Change: Strong Ties and Affective Cooptation

By: Julie Battilana and Tiziana Casciaro

We propose a relational theory of how change agents in organizations use the strength of ties in their network to overcome resistance to change. We argue that strong ties to potentially influential organization members who are ambivalent about a change (fence-sitters)... View Details

Keywords: Organizational Change and Adaptation; Social and Collaborative Networks; Power and Influence; Health Industry; United Kingdom

Find at Harvard

29 Sep 2014
News

The Facebook gambit

28 Dec 2010
News

Five Best Business Books to Read for Your Career in 2011

21 Feb 2013
HBS Seminar

Barry Wellman, University of Toronto

Platform Envelopment

Due to network effects and switching costs in platform markets, entrants generally must offer revolutionary functionality. Platform envelopment offers a second entry path: one that does not rely upon Schumpeterian innovation. Examples of successful envelopment... View Details

April 2015 (Revised June 2020)
Case

Comcast Corporation (A)

By: Sunil Gupta, Henry McGee, Felix Oberholzer-Gee and Margaret L. Rodriguez

In March 2015, the U.S. television industry received a major wake-up call. HBO, a premium cable channel with over 30 million subscribers, had announced it would begin offering a standalone streaming service. This new service would allow customers to bypass the cable... View Details

Keywords: Cable Television; HBO; Industry Evolution; Television Entertainment; Disruption; Business Model; Competitive Strategy; Media and Broadcasting Industry

November 2009 (Revised September 2010)
Case

Personal Rapid Transport at Vectus, Ltd.

By: Benjamin Edelman

Personal Rapid Transport (PRT) vehicles—often called "driverless taxis"—sought to combine the best characteristics of cars, taxis, and trains, while adding features unavailable in any existing transportation system. Like cars and taxis, PRT vehicles carried small... View Details

Keywords: Entrepreneurship; Network Effects; Competitive Strategy; Corporate Strategy; Transportation Networks; Transportation Industry

November 2020
Case

Guild Education: Unlocking Opportunity for America's Workforce

By: William A. Sahlman, Michael D. Smith, Nicole Tempest Keller and Alpana Thapar

Founded in 2015, Guild Education is an education marketplace that connects employers and universities to provide employees with ‘education as a benefit.’ The Denver-based company is transforming traditional tuition assistance programs by facilitating direct payment by... View Details

Keywords: Education; Digital Platforms; Information Technology; Employees; Social Enterprise; Education Industry; Technology Industry; Colorado