Your uptime SLA means nothing when the physical process can't wait for your rollback

There’s a conversation that happens when IT developers first encounter operational technology. It usually goes something like this:

“What’s your uptime requirement?”

“99.9%.”

“That’s about 8 hours of downtime per year. We can work with that.”

“No, 99.9% per shift. We run 24/7. And if the system goes down mid-batch, we lose the entire batch.”