I've been doing a lot of interviewing for DevOps, Site Reliability Engineering (SRE), and Cloud Infrastructure jobs, and I think these three concepts are critically underappreciated.
1. Infrastructure As Code
2. Immutable Infrastructure (see my arch server video for examples in the comments)
3. Datacenter-as-a-Computer / Distributed Systems Scheduling


DigitalOcean referral link: https://m.do.co/c/0380a1db56a6

My step-by-step project-based Linux course for beginners: https://www.udemy.com/course/hands-on...

Free Linux Sysadmin Course Playlist:    • The Linux Basics Course: Beginner to ...  

Patreon:   / tutorialinux  
Official Site & e-mail list: https://tutorialinux.com/
Twitter:   / tutorialinux  
Facebook:   / tutorialinux  
Podcast: http://kernelpanicpodcast.com