Hmm.. No. There was a business that our system supported that had a peak transaction day on Mondays (55% of the weekly volume flow) and Fridays had less than 7

Hmm.. No. There was a business that our system supported that had a peak transaction day on Mondays (55% of the weekly volume flow) and Fridays had less than 7% of weekly volume flow. The rest of the days had a tapering of volumes between these levels. No volumes flowed in during the weekends, but downstream processing occurred on Saturdays (of the transactions that came in Thursday/Friday that still remained). We deployed on Thursdays. Never on Sundays (simply because Monday was a peak day and we would never recover from business SLA failures if things went wrong when we opened the Monday). It gave our support engineers a weekday to look into issues, if any and escalate to a developer on Friday, if required. There is such a thing called pragmatism.