[coderintherye]

Exec level Framework is DORA: https://www.pentalog.com/blog/strategy/dora-metrics-maturity...

For your level: Your team and org size is large enough that you should be able to commit someone half or full-time to focusing on Opex improvements as their sole or primary responsibility. Ask your team, there's likely someone who would actually enjoy focusing on that. If not, advocate for a head count for it.

Edit: Also ensure you have created playbooks for on-call engineers to follow along with a documentation culture that documents the resolutions to most common issues so as those issues arise again they can be easily dealt with by following the playbook.

Note: This is unpopular advice here because most people here don't want to spend their lives bug-fixing, but in reality it's a method that works when you have the right person who wants to do it.