Network programmability is such a generic term, like SDN and the whole Software Defined X paradigm, that it means different things to different people. Not so long ago network programmability was synonymous with Openflow but as time passed and pragmatism kicked in, the industry settled around a common view.
Driven by real benefits like time and cost savings, reduction of human error, customization and innovation, network programmability is currently understood as a set of tools and best practices to deploy, manage and troubleshoot network devices.
