I have inherited a site hosted on Pantheon that hasn't been touched (other than content updates) for 5 years. I'm not sure which of these guides apply.

https://docs.pantheon.io/drupal-migration

Terminus shows this as the upstream

Upstream 8a129104-9d37-4082-aaf8-e6f31154644e:[https://github.com/pantheon-systems/drops-8.git](https://github.com/pantheon-systems/drops-8.git)

Which doesn't quite seem to fit any of their scenarios. Anyone have some advice/experience on how to proceed?

https://www.drupal.org/project/flowdrop

I’ve been comparing hosting options and noticed that services like Linode or DigitalOcean ... don’t really offer much in terms of DevOps automation or collaboration tools. Meanwhile, platforms like Pantheon, Acquia, and Platform.sh provide some really advanced features — things like full, application-aware snapshots (flushing MySQL/Redis/Solr before taking them), instant environment cloning per Git branch, and seamless Git-based deployments.

You can debug live environments, integrate directly with GitHub/GitLab/Bitbucket, and easily manage multi-app setups (frontends, APIs, microservices, etc.) in a single project. It’s incredibly convenient for Drupal team development, though obviously, not cheap.

I know it’s difficult to fully replicate what Platform.sh provide, but I’d love to know what kind of tech stack and workflows people are using to get close.

I’m not a DevOps engineer, just a Drupal developer who wants to experiment with a similar setup for training and learning purposes, maybe something I could host myself and use to practice modern deployment workflows.