bunged

Thanks for explaining, that does sound compelling, and useful that it can be slotted into an existing system.

Interesting, so does it keep all the intermediates from previous builds and then does an incremental build on top of this? Like doing a local dev build but in the cloud?

Why would I want to use this instead of, say, GitLab's CI/CD Pipelines or Azure Pipelines?

It's a fair bit of effort to change one's already established code repository and build system, and I don't really understand from your pitch what you are offering that is sufficiently advantageous for a decision maker to choose to switch.