The Silicon phenomenon was, is, and will be an extremely important phenomenon in the accelerated technological, scientific, and economic development of countries and regions. Silicon Valley North (SVN) is the high tech capital of Canada, the nation?s most developed and dynamic technology sector, which includes multiple clusters in telecommunications, software, photonics, and life sciences. It gave birth to many well-known companies such as Corel, JDS Uniphase, Mitel, Newbridge Networks, Nortel Networks, Digital Equipment of Canada, just to mention a few. A lot of literature describes Silicon Valley and Silicon Alley in the US, Silicon Islands in Asia, and so on. Despite the quite evident importance of Silicon Valley North for the regional, national, and international technological development (especially when Nortel Networks and JDS Uniphase became global leaders in their fields and expanded in explosive fashion), this phenomenon is far from being well understood ÍNDICE Firm Demographics in Silicon Valley North. (F. Brouard et al.). A Tale of One City: The Ottawa Technology Cluster. (J. J. Madill, G. H. Haines Jr., A. L. Riding). The National Capital Region?s Product Leadership Cluster. (A. J. Bailetti). How Technology-Intensive Clusters are Organized in the Ottawa Region. (A. O?Sullivan). The Role of Venture Capital in Building Technology Companies in the Ottawa Region. (J. Callahan, K. Charbonneau). The Role of Universities in Developing Canadian Silicon Valley. (R. Armit). The River Runs Through It: The Case for Collaborative Governance in the National Capital Region. (G. Paquet, J. Roy, C. Wilson.). Technological Development in Gatineau, the Quebec Sector of Silicon Valley North. (F. Materazzi). Developing Knowledge Workers in Silicon Valley North: Its Not Just About Training. (L. Dyke, L. Duxbury, N. Lam). Can Technology Clusters Deliver Sustainable Livelihoods? Constructing a Role for Community Economic Development. (E. T. Jackson, R. Khan). An Innovative Mode