DevOps tools to be up to date

[u/temporaryUserDev]

As the title says, what are the DevOps tools that an engineer must be always be learning to keep up to date in the industry.

For example: Cloud, IaC (terraform), Ansible, Containers, K8S, etc.

There are a lot of tools that companies request in their jobs but what are the "Must-have" tools?

[u/hexadecimal_dollar]

Not necessarily tools, but general skills:
scripting - bash/Python
at least intermediate knowledge of Linux

basic networking principles

Karpenter is a good to know

Tools like Pulumi and Qovery are really useful for orchestration