We created Really to be human-readable and writeable, to help with our development of Resourcely. When starting Resourcely we hired Rego experts, and set them loose on using Rego to create customizable guardrails at scale as part of the Resourcely platform: it wasn’t sustainable. So we spent 6+ months and millions of dollars to build policy language that could power a configuration engine of the future, and what we built is Really.
Really is an opinionated policy language built for articulating rules that deal with configuration settings, most commonly for infrastructure. Writing policy with Really takes our team 5-10% of the time compared to Rego, because it is easy to both read and write.