[larrydag]

From article “We invented simple domain specific languages to express those things, such that other engineers in the company who are not software engineers can maybe configure it.”

It sounds like they created their own internal API configuration scripts to be highly dynamic and configurable. Similar to many gaming or operating systems config files. Sounds be a highly productive way to test and deploy software changes. Not only for people who are not C++ proficient but also to allow Engineers and Scientist to focus on their own design work and not have to worry about software development.