Knative[0] pushes in that direction from the side of "complicated" Kubernetes. It's still far away from easy, but I expect that the solution will look like this -- a software that uses Kubernetes base to provide high-level primitives. Helpful cloud provider will give you a cluster with such thing already installed, as Google already does for Knative with the Cloud Run offering.

Microsoft allows you to publish a web application from Visual Studio project to Azure.[1] It's very simple, but more much opinionated. It's a great trade-off for an individual developer who needs to focus on functionality. In the context of this discussion, there's an important distinction -- it's not an interface, it's just a feature. It's tightly coupled to Azure from one side and to Microsoft dev stack from the other.

[0] https://knative.dev/ [1] https://tutorials.visualstudio.com/aspnet-azure/publish