A “definition of done” for Agile at scale

It seems everyone wants to scale Agile. Many say they have done so already. But there are different views on what the end state looks like. What does it mean to have scaled Agile? For many, it simply means replicating certain practices across all development teams. Although this may improve the internal quality of software, it won’t help improve overall IT performance as perceived by the business.
Agilists advocate that every story must have acceptance criteria. What are the acceptance criteri...