Dolby Laboratories, Inc. Harman International Cisco Systems, Inc Cisco Systems Hydro-Quebec Broadcom Corporation Toshiba Applied Communication Sciences Huawei Technologies Ericsson Ericsson Siemens Siemens Worldsensing King's College London Intracom Telecom Technical University of Munich, TUM ZTE Corporation, Inc. Huawei Technologies Universidad Diego Portales Cisco Systems This draft documents requirements in several diverse industries to establish multi-hop paths for characterized flows with deterministic properties. In this context deterministic implies that streams can be established which provide guaranteed bandwidth and latency which can be established from either a Layer 2 or Layer 3 (IP) interface, and which can co-exist on an IP network with best-effort traffic. Additional requirements include optional redundant paths, very high reliability paths, time synchronization, and clock distribution. Industries considered include professional audio, electrical utilities, building automation systems, wireless for industrial, cellular radio, industrial machine-to-machine, mining, private blockchain, and network slicing. For each case, this document will identify the application, identify representative solutions used today, and the improvements IETF DetNet solutions may enable.