I'm always a sucker for parallel functional programming, but I could not find any details on how specifically it works (and importantly: performs) in Clio.
The .clio files transpile to JavaScript, and the project optimistically targets full JS interoperability (e.g. compatible with any of your favorite npm modules).
Thanks to the portability of JSON, clio can import functions from any compatible microservice, including those written in other languages. For an example of this, see: https://github.com/clio-lang/python-microservice-example
Besides reading the tutorial, I found this source helpful to understanding how Clio knits the microservices together: https://github.com/clio-lang/clio/blob/develop/host/host.js