Cloud AI Platform Pipelines appear to use Kubeflow Pipelines on the backend, which is open source [1] and runs on Kubernetes. The Kubeflow team has invested a lot of time on making it simple to deploy across a variety of public clouds [2], [3].

If Google were to kill it, you could easily run it on any other hosted Kubernetes service.

I haven't used Cloud AI Platform Pipelines, but have spent a lot of time working with Kubeflow Pipelines and its pretty great!

[1] https://github.com/kubeflow/pipelines

[2] https://www.kubeflow.org/docs/aws/ (Deploy to AWS)

[3] https://www.kubeflow.org/docs/azure/ (Deploy to Azure)