Good engineering practices are needed to sustain agility. I’ve been reading Accelerate: The Science of Lean Software and DevOps: Building and Scaling High Performing Technology Organizations by Nicole Forsgren, Jez Humble, and Gene Kim; in their research, they found that technical practices predict culture, continuous delivery, job satisfaction, software delivery performance, less deployment pain, and less time spent on rework. Technical practices are incredibly powerful!
It can be helpful to have folks outside of development teams understand the concepts behind the practices so they can better support them. Sometimes stakeholders will surprise you and find ways of applying the concept in their own work. In some cases, holding a workshop with live coding may be a fit—if not, there are games you can facilitate to teach technical practices:
Agile Fluency Game - look for upcoming an workshop