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#azure 

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.

NDC Conferences

Stack Overflow's platform engineering team shares their journey deploying applications across Azure and GCP. They tackled multi-cloud complexity by inverting the problem: infrastructure publishes metadata that apps consume at deploy time, rather than apps hardcoding cloud-specific details. Their solution uses custom Go tooling, CNAB invocation images, and layered YAML overlays to centralize infrastructure definitions and standardize deployments. While they successfully unified their deployment pipeline, developer experience remains challenging due to overlay complexity. Future plans include adopting Kratix for infrastructure abstraction and improving local development workflows.

How we support multi-cloud apps at Stack Overflow - Chris O'Dell - NDC London 2026