This document summarizes technological innovation in the age of the Internet. It discusses the exponential growth of Internet hosts and users since 1981. It describes how the Internet has lowered barriers for forming groups and collaborating across distances. Many human activities have migrated online, blurring regulatory boundaries between technologies and industries. While a few large companies like Google and Facebook dominate certain markets, smaller innovative firms can still thrive if they remain nimble. The document outlines several policies that impact technological innovation, such as antitrust laws, net neutrality regulations, infrastructure subsidies, and intellectual property regimes. It also notes some transatlantic issues between the US and Europe regarding these topics.