Competitive Strategy: Techniques for Analyzing Industries and Competitors [Hardcover]

Michael E. Porter is a professor at Harvard Business School and a leading authority on Strategy and Competitiveness. He did his MBA and Ph.D from Harvard. He has served as an advisor to several business and government organizations. He was also a founder of the strategy and management consulting firm, Monitor Group.
Professor Porter is best known for his landmark books that defined the field of Strategy - Competitive Strategy: Techniques for Analyzing Industries and Competitors (1980) and Competitive Advantage: Creating and Sustaining Superior Performance (1985). These books are must reads at the leading business schools.
I read Competitive Strategy (1980) for a Strategy course. It starts with a bang. On the very second page of the first chapter you will find the figure for the famous Five Forces Driving Industry Competition. While Porter did not intend this framework to be used for case interviews, in reality, this is a very important framework to know for the case interviews conducted by leading strategy and management consultancy firms. All top MBAs and anybody who has ever been hired by the best strategy and management consultancy firms knows this framework, and has probably read this book. The first chapter immediately proceeds to explaining each of the five forces:
1. Threat of new entrants
2. Intensity of rivalry among existing competitors
3. Pressure from substitute products
4. Bargaining power of buyers
5. Bargaining power of suppliers
While the first chapter alone is worth the cost of this book, I recommend it for the wisdom contained in the rest of the book. The chapters are organized under three parts (General Analytical Techniques, Generic Industry Environments, and Strategic Decisions). There are several thought provoking discussions on concepts such as A Framework for Competitor Analysis (Future goals, Assumptions, Current strategy, Capabilities), Market Signals and a Strategic Analysis of Vertical Integration.
This book is the single most important book on business strategy. It is a classic - like the management classics of Peter Drucker. As with every classic, the examples are old (not to be confused with outdated). But, the competition HP faced for electronic calculators in the 70s, it still faces for computers today. There have been several changes in the players, technology, industries, globalization, etc, but the foundation built by Porter's masterpieces are still relevant today.
Porter's second book Competitive Advantage (1985) introduced another important tool - The Value Chain. This analyzes primary activities (Inbound logistics, Operations, Outbound logistics, Marketing and Sales, Services) and support activities (Procurement, Technology development, Human resource management, Firm infrastructure) that firms must analyze to create value and competitive advantage.
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Must have if you're interested in Strategy. Still working on it, so really can't say too much of it, but well, I guess the reputation of the book and the popularity over these years has said everything.

Anyone would agree that this book is the best overview of competitive strategy analysis ever written. The strength of the book is a solid outline of subjects and questions to improve your thinking, and get to be a step ahead of the competition. In highly-competitive, commodity businesses, that's usually what strategies focus on.

On the other hand, the rapid advances of knowledge and technology mean that the relevant benchmark is perfection, not the competitor, in defining an ideal best practice. In that world, this book has serious limitations, because the competitive dimension is often less important than the customer and user dimension these days.

Any business arena begins, as Peter Drucker so aptly put it, with the task "to create a customer." That reminder is especially relevant today when they are so many new ways to serve a customer's needs that no one has ever considered before. The strategic point of 'Blown to Bits' for example is that almost every business will see its vertical value chain (moving from resources through to the customer) broken apart into tiny segments each served by specialists. If you did not begin with that perspective in analyzing the impact of electronically-based business practices, you could easily focus on the wrong tasks using this book to create an over-broad strategy focus, rather than concentrating on just a few areas.

I suspect that the applications of Moore's Law and Metcalfe's Law need to be explicitly considered as part of the analysis that Professor Porter is recommending.

A more general weakness in this book is that it assumes that future conditions will be stable enough to draw conclusions about which conditions will be favorable, without giving enough guidance on how to deal with the increasing frequencies and degrees of volatility that we see (in areas like financial markets, commodity prices, the weather, changing customer preferences, and so forth).

Although no book that takes such a narrow focus can help but have weaknesses (like having the podiatrist not notice that you have kidney problems), if you want a good start of how to think about competitors, this is the book for you. Just be sure you keep developing yours strategy with additional dimensions after you finish using this analysis.

If you have read none of Professor Porter's works, this is the one book you should read.