[rmc00]

I work for a company that provides a mission critical service to a lot of people. Maybe we're just spoiled, but we have multiple failover environments. That means that we can deploy in the afternoon by failing the service over to a hot backup during the deployment. When the deploy is finished, we fail the backup system to the production environment and we deploy to the backups while the primary is running. Since there's 0 downtime, we like to work through the process in the morning/afternoons. No all-nighters here, and its definitely not a nice-to-have service. It's all about architecture and design.