The plan to move to Google Cloud was in motion for many months, way before talks about a potential GitHub acquisition started.
They adopted Kubernetes relatively early, and as they progressed their reliance on Azure-specific services went down. At that point move to another cloud was a purely financial decision.
The move to k8s was not strictly a means to allow cloud migration. GitLab sells their Enteprise product, and the Kubernetes-based deployment helps customers with product trial and adoption. Cloud migration is a welcomed side-effect of that initiative.
I'd wager they got some kind of discount or exclusive pricing as well? Big ticket companies (which Gitlab could arguably be called in the tech world) moving to a cloud platform could generate a fair bit of buzz and free marketing?
They adopted Kubernetes relatively early, and as they progressed their reliance on Azure-specific services went down. At that point move to another cloud was a purely financial decision.
The move to k8s was not strictly a means to allow cloud migration. GitLab sells their Enteprise product, and the Kubernetes-based deployment helps customers with product trial and adoption. Cloud migration is a welcomed side-effect of that initiative.