DevNet stands for Development Network(ing). DevNet is a skill.
DevNet in a Nutshell = To Apply ‘Software Developer Tool skills” for Networking Operation and Provisioning. Some others called NetDevOps or DevOps (Network Development and Operations).
Whether you come from a Software Engineer Developer background, or come from the old fashioned notepad, Copying and pasting network text standard, Configuring one device at a time, SNMP or CLI, with the following valuable skills, you will be able to create programmabable solutions that integrate with network management plus all that in-depth knowledge of the underlying and overlying network topologies and network protocols. The following DevNet skills you should consider to learn first (in recommended percentage) :