Economic agents' behavior is affected by their position in a network, either exogenous or endogenous, in which they interact with a subset of neighbours only. The network's links, which may be generated by vertical and/or horizontal relations, or by more complex morphologies, may explain the...

We study the role played by geographical distance in the peering decisions between Internet Service Providers. Firstly, we assess whether or not the Internet industry shows clustering in peering; we then concentrate on the dynamics of the agglomeration process by studying the effects of...

In the Internet information packets are routed through many vertically related hops. However these network hierarchies are not fixed. Two providers can be simultaneously vertically related in a routing process as supplier and retailer, while horizontally competing in another. We study pricing...

We consider different patterns of infinite technological adoption choices by firms in a Bertran duopoly. Every period, technological progress provides a sequence of cost reducing innovations. The equilibrium concept is Markov Perfect Equilibrium. We analyse conditions for which equilibrium...

Peering decisions between Internet Service Providers contain substantial non-measurable aspects requiring trust and informal cooperation among peering partners. We study whether spatial agglomeration is observed between Internet peers. Our empirical analysis of the bilateral peering decisions at...

Network hierarchies in the Internet are often not fixed: two providers can be simultaneously input supplier and retailer in a routing process, while being horizontally competing in another. We introduce a stylised network model capturing these aspects of the Internet to study the impact of...

In this paper we study concentration in the European Internet upstream access market. Measurement of market concentration depends on correctly defining the market, but this is not always possible as Antitrust authorities often lack reliable pricing and traffic data. We present an alternative...

Does asymmetry between Internet Providers affect the “fairness” of their interconnection contracts? While recent game theoretic literature provides contrasting answers to this question, there is a lack of empirical research. We introduce a novel dataset on micro-interconnection policies and...