But it's not simpler when you consider all the things you've got to do around and after installing that binary on a VM instance. Consider the overhead of managing it - monitoring it, updating it.

Failover when the node dies. Clustering for high availability?

Backups? For a cache, probably not, for a job queue broker, probably necessary.

Making sure your app deals with inserting into Redis on successful transactions and not when a transaction is rolled back.

Getting up and running can be fairly painless, staying running on all edge cases and handling partial failures is what gets you.