Tools to manage multiple Salesforce orgs — centralized updates, auth checks, rollbacks?

Our team works with a large number of Salesforce orgs (sandboxes, demos, client production orgs, etc.). We've run into challenges with:

tracking which components are up to date,

identifying orgs that require reauthorization,

safely applying and rolling back changes without manual checks.

I’m looking for real-world experiences:

How do you manage deployments in a multi-org environment?

Are you using custom scripts or any existing CI/CD or DevOps tools?

How easy is it to roll things back if something goes wrong?

Any advice, best practices, or tool recommendations would be greatly appreciated — especially solutions that don’t require deep scripting or heavy setup.