Platform engineering is the discipline of designing and building toolchains and workflows that enable self-service capabilities for software engineering organizations in the cloud-native era.

Platform Engineering

When you say, “Something higher level than a YAML” Could be something like Pulumi?

Or are you just removing the need for application engineers to understanding IaC? 

Yes, for "something higher level than YAML" I refer to any abstraction, advanced templating or generation logic/code (Jsonnet, Pulumi, CDK, ..). We follow "you build it, you run it" so engineering teams need to have some understanding of infrastructure (e.g. configure managed cloud services), but we want to remove toil so it's a trade-off on what to expose (easy things should be easy, hard things should be possible).