Strategy

Understanding Michael Porter: 8 key ideas

by Joan Magretta

The core ideas of Understanding Michael Porter, each in under a minute, written in our own words. Want the full depth? Get the book.

1. IDEA 1 OF 8

   Strategy means being different

   Magretta, who worked with Michael Porter, explains his ideas on competition and strategy in plain language.

   Porter argues that strategy is about being different in ways that create value, not about being the best.

2. IDEA 2 OF 8

   Five forces shape industries

   Magretta explains Porter's five forces: rivalry, new entrants, substitutes, buyers and suppliers.

   Together they determine an industry's profitability. In her account, the model explains why some industries are rewarding and others are hard, whatever the quality of the firms inside them.

3. IDEA 3 OF 8

   Activities create value

   Magretta explains the value chain, the activities a company performs to deliver a product.

   In her account, looking at the chain lets a manager see which steps give an edge and which add cost without value.

4. IDEA 4 OF 8

   Advantage shows in prices or costs

   Magretta explains that competitive advantage means higher prices or lower costs than rivals.

   In her account, a firm must be able to deliver something customers value more or deliver it more cheaply than rivals, or its position is weak.

5. IDEA 5 OF 8

   Efficiency is not strategy

   Magretta explains Porter's distinction between operational effectiveness and strategy.

   In her account, doing the same things faster and better is useful but easy for rivals to copy, while strategy means choosing a different set of activities.

6. IDEA 6 OF 8

   Strategy needs trade-offs

   Magretta explains that good strategy requires choosing what not to do.

   In her account, a firm that tries to serve everyone and do everything ends up with no clear identity, because each choice shuts out another.

7. IDEA 7 OF 8

   Activities must fit together

   Magretta explains that strong strategies link activities so they reinforce each other.

   In her account, when each activity supports the others, the whole is harder for rivals to copy than any single part.

8. IDEA 8 OF 8

   Strategy needs continuity

   Magretta explains that strategies take time and should not change constantly.

   In her account, a company needs time to build the skills and reputation behind its strategy, and constant changes waste that effort.