Maaret Pyhäjärvi shows that you don't always need to have a written-down test automation strategy when you have principles that you can follow. And, in my opinion, she has some good ones!
There's an interesting story behind the quality process that contributed to Toyota's success and I liked a summary of lessons learned from their approach that Team Merlin brought up here.
This is a solid read if you want to learn about QAOps from different perspectives provided by several experienced software testers.
Another interesting take on this matter is Nate Ballantyne's article What is QAOps?.