Stack Overflow recently shifted to the cloud, hosting Teams and Enterprise on Azure and our public sites on GCP. This meant our services had to run seamlessly in both environments.

In this talk, I’ll share how our Platform Engineering team built the abstractions that make multi-cloud support easy for developers. Using Kubernetes as a common runtime, we standardised infrastructure metadata, created a Stack-specific flavour of the CNAB spec, and built Go-based CLI tools to simplify deployment. Our approach provides a layer between infrastructure and execution, minimising multi-cloud complexity for engineers.

I’ll cover both our philosophy and the technical details—highlighting what worked, what didn’t, and what we learned along the way.