Where is a good resource to learn about cloud migration / infrastructure modernization?

I found this particular article of Evernote's experience migrating to GCP, and I found out that it's a great read.

https://evernote.com/blog/part-1-our-options-to-migrate/

I would love to learn more about other companies' experience with regards to migrating to Cloud / infrastructure modernization. Not necessarily manual, but more of customer stories and use cases. Where's a good place to get this? Anything you guys can share?

Thanks!