Software has turned the infrastructure world upside down. Hardware speeds and feeds no longer dominate infrastructure and operations (I&O) professionals' criteria; they know that the fastest packet-processing chip or largest disk capacity won't deliver on the business technology (BT) agenda. I&O professionals now adopt technologies, such as infrastructure-as-code or interaction technologies, that can help with business' digital transformation — and the market has responded. Forrester identified and investigated 13 of the most important BT infrastructure technologies that help make this digital transformation happen. This TechRadar report defines the current state, business value, and long-term prospects for each technology.