[iends]

I work on a large enterprise SaaS. It depends on how long a services test take, but our deploys to production require approval by the security team, which all happens via JIRA approvals. So less than a day. If it's break the glass urgent in under an hour, mostly constrained by test automation. If it was something insane, I could probably do it in under 10 minutes for a single amazon region by turning off the test automation, but never had to do this. Feature toggles only take about 5 minutes to propagate and much less work than doing a deploy.

We have Dev, Test, & 10+ prod regions. The service I work on takes about an hour to run tests in each region, but that involves almost 10 years of test automation, building a custom AMI on EC2, and deploying. There is also cross region AMI copying which slows things down.

To bootstrap a new region takes about 2 months for the entire product with developers kinda working in the background. My service takes about a week worth of work, but lots of external dependencies and issues pop up. We do this about once a year so its' almost not worth optimizing for.