This book argues that beneath the Irish trade and foreign investment boom lies a more interesting story of regional innovation promoted by an alliance between the state and local technical communities. This alliance was governed through a decentralized set of state institutions, drawing on 'global' and 'local' economic and political resources. This 'Developmental Network State' has had a significant impact on the growth of Ireland's high tech cluster and is central to the emergence of an international network of 'global high tech regions' from Silicon Valley to Ireland, Taiwan, and Israel. The book provides a detailed study of the rise of the software industry in Ireland and of the state institutions and political conditions which promoted it. It shows how new 'network state' policies and institutions have been central to high tech regions elsewhere.