This happens so often on HN, and it is so god damn frustrating. I'm literally a fucking expert, telling you the best thing to do, and explain why, and I get downvoted for it. The next person who tells me in a comment "explain your opinion! you're not helping!" when I don't write an entire novel to justify my position, I'm going to link back to this thread. Pointless.

I've gone to the trouble of googling these articles for you (it took me a whole 30 seconds!). Please read any of them.

https://webcache.googleusercontent.com/search?q=cache:https:...

https://devopscube.com/immutable-infrastructure/

https://thenewstack.io/a-brief-look-at-immutable-infrastruct...

https://www.digitalocean.com/community/tutorials/what-is-imm...

https://www.hashicorp.com/resources/what-is-mutable-vs-immut...

https://www.techtarget.com/searchitoperations/definition/imm...

https://www.oreilly.com/radar/an-introduction-to-immutable-i...

https://www.terraformpilot.com/articles/mutable-vs-immutable...

https://www.bmc.com/blogs/immutable-infrastructure/

https://www.linode.com/docs/guides/what-is-immutable-infrast...

https://devops.com/immutable-infrastructure-the-next-step-fo...

https://openupthecloud.com/what-is-immutable-infrastructure/

https://www.opsramp.com/guides/why-kubernetes/infrastructure...

https://www.cloudbees.com/blog/immutable-infrastructure

https://www.daily-devops.com/devops/immutable/architecture-p...

http://radar.oreilly.com/2015/06/an-introduction-to-immutabl...

https://highops.com/insights/immutable-infrastructure-what-i...

https://docs.aws.amazon.com/wellarchitected/latest/financial...