[theandrewbailey]

(FYI: I work with several clients on Salesforce Commerce Cloud, each with their own codebases and instances.) A deployment to staging involves a build that usually takes 5 or so minutes. Depending on the size of the codebase (~50 to ~200 MB), a deployment from staging to production takes 1 to 5 minutes, followed by a cache invalidation that takes up to 15 minutes.

All told, maybe 30 minutes from writing code to running in production. That turnaround is extremely rare, only when an urgent hotfix is needed. Most releases are heavily tested in staging for several days before moving to production.