Are all film stars linked to Kevin Bacon? Why do the stock markets rise and fall sharply on the strength of a vague rumour? How does gossip spread so quickly? Are we all related through six degrees of separation? There is a growing awareness of the complex networks that pervade modern society. We see them in the rapid growth of the internet, the ease of global communication, the swift spread of news and information, and in the way epidemics and financial crises develop with startling speed and intensity. This introductory book on the new science of networks takes an interdisciplinary approach, using economics, sociology, computing, information science and applied mathematics to address fundamental questions about the links that connect us, and the ways that our decisions can have consequences for others.

Determinants of firm and market organization; Analysis of market behavior; Empirical methods and results; International issues and comparision; government intervention in the Marketplace.

This paper studies the practice of influencer marketing in oligopoly markets and its effect on market efficiency. We develop a duopoly model in which firms sell horizontally differentiated products. Consumers are influenced by other consumers' choices, and some consumers are more influential than others. Firms' influencer marketing strategy involves discovering the influence of a subset of consumers and price discriminating based on this information.In equilibrium, firms subsidize consumers whose influence is above average and charge premia to below average influential consumers; the equilibrium premia/discounts depend on the strength of network effects and the level of information that firms have on consumers' influence. From a normative perspective, we show that influencer marketing leads to inefficient consumer-product matches. Firms' investments in discovering consumers' networks are strategic complements, leading to a race for information acquisition that erodes total surplus and firms' profits but increases consumer surplus.

What is Network Effect A network effect is a phenomena that occurs in economics and in which the value or utility that a user obtains from a product or service is dependent on the number of users of products that are compatible with the product or service. Users are able to derive an increasing amount of value from a product because to network effects, which are often positive feedback systems. As more users join the same network, the value of the product increases. There are two impacts that may be attributed to the adoption of a product by an extra user: the first is an increase in the value of the product to all of the other users, and the second is an enhancement of the motivation for other people who do not use the product to use it. How you will benefit (I) Insights, and validations about the following topics: Chapter 1: Network effect Chapter 2: Customer relationship management Chapter 3: Externality Chapter 4: Information good Chapter 5: Product bundling Chapter 6: Pricing Chapter 7: Product life-cycle management (marketing) Chapter 8: Porter's five forces analysis Chapter 9: Barriers to entry Chapter 10: Online shopping Chapter 11: Long tail Chapter 12: Information economics Chapter 13: Open innovation Chapter 14: Mobile commerce Chapter 15: Referral marketing Chapter 16: Two-sided market Chapter 17: Incentive program Chapter 18: Market environment Chapter 19: Surcharge (payment systems) Chapter 20: Economics of digitization Chapter 21: Social media use by businesses (II) Answering the public top questions about network effect. (III) Real world examples for the usage of network effect in many fields. Who this book is for Professionals, undergraduate and graduate students, enthusiasts, hobbyists, and those who want to go beyond basic knowledge or information for any kind of Network Effect.

Digital platforms controlled by Alibaba, Alphabet, Amazon, Facebook, Netflix, Tencent and Uber have transformed not only the ways we do business, but also the very nature of people's everyday lives. It is of vital importance that we understand the economic principles governing how these platforms operate. This book explains the driving forces behind any platform business with a focus on network effects. The authors use short case studies and real-world applications to explain key concepts such as how platforms manage network effects and which price and non-price strategies they choose. This self-contained text is the first to offer a systematic and formalized account of what platforms are and how they operate, concisely incorporating path-breaking insights in economics over the last twenty years.

A practical guide to the new economy that is transforming the way we live, work, and play. Uber. Airbnb. Amazon. Apple. PayPal. All of these companies disrupted their markets when they launched. Today they are industry leaders. What’s the secret to their success? These cutting-edge businesses are built on platforms: two-sided markets that are revolutionizing the way we do business. Written by three of the most sought-after experts on platform businesses, Platform Revolution is the first authoritative, fact-based book on platform models. Whether platforms are connecting sellers and buyers, hosts and visitors, or drivers with people who need a ride, Geoffrey G. Parker, Marshall W. Van Alstyne, and Sangeet Paul Choudary reveal the what, how, and why of this revolution and provide the first “owner’s manual” for creating a successful platform business. Platform Revolution teaches newcomers how to start and run a successful platform business, explaining ways to identify prime markets and monetize networks. Addressing current business leaders, the authors reveal strategies behind some of today’s up-and-coming platforms, such as Tinder and SkillShare, and explain how traditional companies can adapt in a changing marketplace. The authors also cover essential issues concerning security, regulation, and consumer trust, while examining markets that may be ripe for a platform revolution, including healthcare, education, and energy. As digital networks increase in ubiquity, businesses that do a better job of harnessing the power of the platform will win. An indispensable guide, Platform Revolution charts out the brilliant future of platforms and reveals how they will irrevocably alter the lives and careers of millions.

In markets with network effects, users must form expectations about the total number of users who join a given platform. In this paper, we distinguish two ways in which rational expectations can be formed, which correspond to two different types of users-sophisticated and unsophisticated. Only sophisticated users adjust their expectations in response to platforms' price changes. We study the effect of the fraction of sophisticated users on platform profits. A monopoly platform's profits are always increasing in the fraction of sophisticated users. The profits of competing platforms in a market of fixed size are decreasing in the fraction of sophisticated users. When market expansion is introduced, the fraction of sophisticated users that maximizes competing platforms' profits may be positive and is strictly lower than 1. We also investigate the possibility of platforms investing in "educating" unsophisticated users. In a competitive environment, such education is a public good among platforms and therefore the equilibrium level is lower than the one that would maximize joint industry profits.