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by pchiusano 870 days ago
Yes, it is! Of course there's other technologies involved but the core services for our compute fabric and storage layer are pure Unison[1]. A number of open source libraries in the Unison ecosystem were developed via us eating our own dogfood while developing Unison Cloud. Same with evolution of the language and tooling, which we've continued improving.

We have a few things still in Haskell which we'll probably move into Unison eventually.

[1]: Just to clarify, our storage layer wraps DynamoDB in an interesting way to provide the transactional API we wanted - we didn't literally implement our own cloud database on top of just the file system and some VMs. :)