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Strategy Research for Practitioners

The Ecosystem Era: Beyond Markets and Hierarchies

By Michael G. Jacobides, Carmelo Cennamo, and Annabelle Gawer (2018)

For decades, business strategy has been viewed through the lens of a firm vs. industry battle or a buyer vs. supplier negotiation. However, as digital platforms and complex global networks take center stage, these traditional models are proving insufficient. A foundational study in the Strategic Management Journal, “Towards a theory of ecosystems,” by Michael G. Jacobides, Carmelo Cennamo, and Annabelle Gawer (2018), provides a new framework for understanding the ecosystem—a distinct organizational form that sits between the open market and the rigid hierarchy.

What is an Ecosystem?

The researchers define an ecosystem as a set of actors characterized by multilateral, nongeneric complementarities that are not fully controlled by a central hierarchy. Unlike a traditional supply chain where a lead firm (like an automaker) dictates exactly what every supplier must do, an ecosystem allows independent firms to coordinate their efforts through shared rules and standards while maintaining their own autonomy.

The Three Pillars of Ecosystems

Pillar 1
Modularity (The Great Enabler): The study argues that modularity is the critical factor that allows ecosystems to emerge. By breaking a complex process into discrete, independent parts that “talk” to each other through thin crossing points (interfaces), firms can work together without needing a boss to oversee every transaction. While the “hub” or “keystone” firm may set the rules and technical standards, individual members remain free to design, price, and operate their own parts of the system.
Pillar 2
Nongeneric Complementarities (The Glue): The researchers identify two specific types of relationships that hold an ecosystem together:
  • Unique Complementarities: These occur when components essentially require each other to function or maximize value, such as a specific app requiring a specific operating system.
  • Super modular (Edgeworth) Complementarities: These occur when more of ‘A’ makes ‘B’ more valuable. For example, as more developers build apps for a platform, the platform becomes more valuable to users, which in turn attracts even more developers.
[Image illustrating unique and supermodular (Edgeworth) complementarities in a business platform]
Pillar 3
Standardized Roles and Rules: In an ecosystem, firms aren’t just partners; they occupy specific roles (such as hub, supplier, or complementor). These roles are governed by standardized rules of engagement rather than customized, one-to-one contracts. This “distributed governance” allows thousands of firms to align toward a common value proposition—like the Android ecosystem’s goal of outperforming the iPhone—without the friction of constant renegotiation.

Managerial Implications: How to Win in an Ecosystem

  • Choose Your Governance Wisely: Managers must decide whether to rely on the open market, build a vertical supply chain, or cultivate an ecosystem. The right choice depends on the level of coordination needed. Ecosystems are best when you need partners to innovate around your core product but don’t want the burden of managing them as employees or captive suppliers.
  • The Recruiting Conundrum: Success in an ecosystem requires recruiting high-quality partners. However, the study identifies a strategic trade-off: the more you “lock in” partners with non-fungible investments, the easier it is to align their efforts—but the harder it will be to recruit them in the first place, as they may fear being trapped.
  • Balance Control and Autonomy: Hub firms must learn the art of “smart power”—managing the standards and interfaces without stifling the entrepreneurial energy of their members. If a hub exerts too much control, the ecosystem risks becoming a rigid, less innovative supply chain.

Conclusion: A New Strategic Canon

The work of Jacobides, Cennamo, and Gawer (2018) moves strategy from a focus on owned resources to a focus on orchestration. In a modular world, wealth is created not just by what you own, but by your ability to design a structure where diverse partners can find value in working together. By understanding the psychological and structural mechanics of ecosystems, leaders can build organizations that are as resilient as they are innovative.

Original Article: Jacobides, M. G., Cennamo, C., & Gawer, A. (2018). Towards a theory of ecosystems. Strategic Management Journal.

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