DevOps still lacks a commonly accepted definition, as discussed recently in the blog post The Problem with Defining DevOps. Kind of obvious in retrospect, but this really complicates meaningful usage of the word, particularly when used outside of the DevOps community.
Cyber resilience is a fundamental change in understanding and accepting the true relationship between technology and risk. IT risk (or cyber risk, if you prefer) is actually business risk, and always has been. And the cybersecurity industry, for what it's worth, has generally avoided this concept because it goes against the narrative that their respective offerings—whether it's a firewall, IDS, monitoring tool, or otherwise—would be the one-size-fits-all silver bullet that can keep businesses safe. But reality tells a different story.