Very interesting discussion.
Since our primary use case is to enable monthly financial performance accountability, we are driven to report data ASAP.
We load around 40 files per month. Happy to report 25 are automated through Datalink. The complete data loading cycle starts on business day 2 and finishes by business day 7. Our SLA is to publish on business day 8 the previous month data to production. Testing is limited to high level KPIs and sample report functionality, with a quick response to incidents reported by end users if/when they find issues.
Business days 2-5 are for datalink files, starting with the Service Now files, followed by files from Oracle Cloud. The GL file is automated and delivered on day 5. Days 6 and 7 are when we load manual files. The last file loaded changes each month.